20388900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1$

素因数の和:123

約数の個数: 216

約数和(自身を含む): 73224480

約数和(自身を除く): 52835580

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 25, 28, 30, 35, 38, 42, 49, 50, 57, 60, 70, 73, 75, 76, 84, 95, 98, 100, 105, 114, 133, 140, 146, 147, 150, 175, 190, 196, 210, 219, 228, 245, 266, 285, 292, 294, 300, 350, 365, 380, 399, 420, 438, 475, 490, 511, 525, 532, 570, 588, 665, 700, 730, 735, 798, 876, 931, 950, 980, 1022, 1050, 1095, 1140, 1225, 1330, 1387, 1425, 1460, 1470, 1533, 1596, 1825, 1862, 1900, 1995, 2044, 2100, 2190, 2450, 2555, 2660, 2774, 2793, 2850, 2940, 3066, 3325, 3577, 3650, 3675, 3724, 3990, 4161, 4380, 4655, 4900, 5110, 5475, 5548, 5586, 5700, 6132, 6650, 6935, 7154, 7300, 7350, 7665, 7980, 8322, 9310, 9709, 9975, 10220, 10731, 10950, 11172, 12775, 13300, 13870, 13965, 14308, 14700, 15330, 16644, 17885, 18620, 19418, 19950, 20805, 21462, 21900, 23275, 25550, 27740, 27930, 29127, 30660, 34675, 35770, 38325, 38836, 39900, 41610, 42924, 46550, 48545, 51100, 53655, 55860, 58254, 67963, 69350, 69825, 71540, 76650, 83220, 89425, 93100, 97090, 104025, 107310, 116508, 135926, 138700, 139650, 145635, 153300, 178850, 194180, 203889, 208050, 214620, 242725, 268275, 271852, 279300, 291270, 339815, 357700, 407778, 416100, 485450, 536550, 582540, 679630, 728175, 815556, 970900, 1019445, 1073100, 1359260, 1456350, 1699075, 2038890, 2912700, 3398150, 4077780, 5097225, 6796300, 10194450, 20388900]

約数ペア:

[(1, 20388900), (2, 10194450), (3, 6796300), (4, 5097225), (5, 4077780), (6, 3398150), (7, 2912700), (10, 2038890), (12, 1699075), (14, 1456350), (15, 1359260), (19, 1073100), (20, 1019445), (21, 970900), (25, 815556), (28, 728175), (30, 679630), (35, 582540), (38, 536550), (42, 485450), (49, 416100), (50, 407778), (57, 357700), (60, 339815), (70, 291270), (73, 279300), (75, 271852), (76, 268275), (84, 242725), (95, 214620), (98, 208050), (100, 203889), (105, 194180), (114, 178850), (133, 153300), (140, 145635), (146, 139650), (147, 138700), (150, 135926), (175, 116508), (190, 107310), (196, 104025), (210, 97090), (219, 93100), (228, 89425), (245, 83220), (266, 76650), (285, 71540), (292, 69825), (294, 69350), (300, 67963), (350, 58254), (365, 55860), (380, 53655), (399, 51100), (420, 48545), (438, 46550), (475, 42924), (490, 41610), (511, 39900), (525, 38836), (532, 38325), (570, 35770), (588, 34675), (665, 30660), (700, 29127), (730, 27930), (735, 27740), (798, 25550), (876, 23275), (931, 21900), (950, 21462), (980, 20805), (1022, 19950), (1050, 19418), (1095, 18620), (1140, 17885), (1225, 16644), (1330, 15330), (1387, 14700), (1425, 14308), (1460, 13965), (1470, 13870), (1533, 13300), (1596, 12775), (1825, 11172), (1862, 10950), (1900, 10731), (1995, 10220), (2044, 9975), (2100, 9709), (2190, 9310), (2450, 8322), (2555, 7980), (2660, 7665), (2774, 7350), (2793, 7300), (2850, 7154), (2940, 6935), (3066, 6650), (3325, 6132), (3577, 5700), (3650, 5586), (3675, 5548), (3724, 5475), (3990, 5110), (4161, 4900), (4380, 4655)]