20947500

素因数分解:

$2^2\times 3^2\times 5^4\times 7^2\times {\mathrm{19}}^1$

素因数の和:63

約数の個数: 270

約数和(自身を含む): 81020940

約数和(自身を除く): 60073440

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 25, 28, 30, 35, 36, 38, 42, 45, 49, 50, 57, 60, 63, 70, 75, 76, 84, 90, 95, 98, 100, 105, 114, 125, 126, 133, 140, 147, 150, 171, 175, 180, 190, 196, 210, 225, 228, 245, 250, 252, 266, 285, 294, 300, 315, 342, 350, 375, 380, 399, 420, 441, 450, 475, 490, 500, 525, 532, 570, 588, 625, 630, 665, 684, 700, 735, 750, 798, 855, 875, 882, 900, 931, 950, 980, 1050, 1125, 1140, 1197, 1225, 1250, 1260, 1330, 1425, 1470, 1500, 1575, 1596, 1710, 1750, 1764, 1862, 1875, 1900, 1995, 2100, 2205, 2250, 2375, 2394, 2450, 2500, 2625, 2660, 2793, 2850, 2940, 3150, 3325, 3420, 3500, 3675, 3724, 3750, 3990, 4275, 4375, 4410, 4500, 4655, 4750, 4788, 4900, 5250, 5586, 5625, 5700, 5985, 6125, 6300, 6650, 7125, 7350, 7500, 7875, 7980, 8379, 8550, 8750, 8820, 9310, 9500, 9975, 10500, 11025, 11172, 11250, 11875, 11970, 12250, 13125, 13300, 13965, 14250, 14700, 15750, 16625, 16758, 17100, 17500, 18375, 18620, 19950, 21375, 22050, 22500, 23275, 23750, 23940, 24500, 26250, 27930, 28500, 29925, 30625, 31500, 33250, 33516, 35625, 36750, 39375, 39900, 41895, 42750, 44100, 46550, 47500, 49875, 52500, 55125, 55860, 59850, 61250, 66500, 69825, 71250, 73500, 78750, 83125, 83790, 85500, 91875, 93100, 99750, 106875, 110250, 116375, 119700, 122500, 139650, 142500, 149625, 157500, 166250, 167580, 183750, 199500, 209475, 213750, 220500, 232750, 249375, 275625, 279300, 299250, 332500, 349125, 367500, 418950, 427500, 465500, 498750, 551250, 581875, 598500, 698250, 748125, 837900, 997500, 1047375, 1102500, 1163750, 1396500, 1496250, 1745625, 2094750, 2327500, 2992500, 3491250, 4189500, 5236875, 6982500, 10473750, 20947500]

約数ペア:

[(1, 20947500), (2, 10473750), (3, 6982500), (4, 5236875), (5, 4189500), (6, 3491250), (7, 2992500), (9, 2327500), (10, 2094750), (12, 1745625), (14, 1496250), (15, 1396500), (18, 1163750), (19, 1102500), (20, 1047375), (21, 997500), (25, 837900), (28, 748125), (30, 698250), (35, 598500), (36, 581875), (38, 551250), (42, 498750), (45, 465500), (49, 427500), (50, 418950), (57, 367500), (60, 349125), (63, 332500), (70, 299250), (75, 279300), (76, 275625), (84, 249375), (90, 232750), (95, 220500), (98, 213750), (100, 209475), (105, 199500), (114, 183750), (125, 167580), (126, 166250), (133, 157500), (140, 149625), (147, 142500), (150, 139650), (171, 122500), (175, 119700), (180, 116375), (190, 110250), (196, 106875), (210, 99750), (225, 93100), (228, 91875), (245, 85500), (250, 83790), (252, 83125), (266, 78750), (285, 73500), (294, 71250), (300, 69825), (315, 66500), (342, 61250), (350, 59850), (375, 55860), (380, 55125), (399, 52500), (420, 49875), (441, 47500), (450, 46550), (475, 44100), (490, 42750), (500, 41895), (525, 39900), (532, 39375), (570, 36750), (588, 35625), (625, 33516), (630, 33250), (665, 31500), (684, 30625), (700, 29925), (735, 28500), (750, 27930), (798, 26250), (855, 24500), (875, 23940), (882, 23750), (900, 23275), (931, 22500), (950, 22050), (980, 21375), (1050, 19950), (1125, 18620), (1140, 18375), (1197, 17500), (1225, 17100), (1250, 16758), (1260, 16625), (1330, 15750), (1425, 14700), (1470, 14250), (1500, 13965), (1575, 13300), (1596, 13125), (1710, 12250), (1750, 11970), (1764, 11875), (1862, 11250), (1875, 11172), (1900, 11025), (1995, 10500), (2100, 9975), (2205, 9500), (2250, 9310), (2375, 8820), (2394, 8750), (2450, 8550), (2500, 8379), (2625, 7980), (2660, 7875), (2793, 7500), (2850, 7350), (2940, 7125), (3150, 6650), (3325, 6300), (3420, 6125), (3500, 5985), (3675, 5700), (3724, 5625), (3750, 5586), (3990, 5250), (4275, 4900), (4375, 4788), (4410, 4750), (4500, 4655)]