20829900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1$

素因数の和:153

約数の個数: 216

約数和(自身を含む): 76193040

約数和(自身を除く): 55363140

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 25, 26, 28, 30, 35, 39, 42, 49, 50, 52, 60, 65, 70, 75, 78, 84, 91, 98, 100, 105, 109, 130, 140, 147, 150, 156, 175, 182, 195, 196, 210, 218, 245, 260, 273, 294, 300, 325, 327, 350, 364, 390, 420, 436, 455, 490, 525, 545, 546, 588, 637, 650, 654, 700, 735, 763, 780, 910, 975, 980, 1050, 1090, 1092, 1225, 1274, 1300, 1308, 1365, 1417, 1470, 1526, 1635, 1820, 1911, 1950, 2100, 2180, 2275, 2289, 2450, 2548, 2725, 2730, 2834, 2940, 3052, 3185, 3270, 3675, 3815, 3822, 3900, 4251, 4550, 4578, 4900, 5341, 5450, 5460, 5668, 6370, 6540, 6825, 7085, 7350, 7630, 7644, 8175, 8502, 9100, 9156, 9555, 9919, 10682, 10900, 11445, 12740, 13650, 14170, 14700, 15260, 15925, 16023, 16350, 17004, 19075, 19110, 19838, 21255, 21364, 22890, 26705, 27300, 28340, 29757, 31850, 32046, 32700, 35425, 38150, 38220, 39676, 42510, 45780, 47775, 49595, 53410, 57225, 59514, 63700, 64092, 69433, 70850, 76300, 80115, 85020, 95550, 99190, 106275, 106820, 114450, 119028, 133525, 138866, 141700, 148785, 160230, 191100, 198380, 208299, 212550, 228900, 247975, 267050, 277732, 297570, 320460, 347165, 400575, 416598, 425100, 495950, 534100, 595140, 694330, 743925, 801150, 833196, 991900, 1041495, 1388660, 1487850, 1602300, 1735825, 2082990, 2975700, 3471650, 4165980, 5207475, 6943300, 10414950, 20829900]

約数ペア:

[(1, 20829900), (2, 10414950), (3, 6943300), (4, 5207475), (5, 4165980), (6, 3471650), (7, 2975700), (10, 2082990), (12, 1735825), (13, 1602300), (14, 1487850), (15, 1388660), (20, 1041495), (21, 991900), (25, 833196), (26, 801150), (28, 743925), (30, 694330), (35, 595140), (39, 534100), (42, 495950), (49, 425100), (50, 416598), (52, 400575), (60, 347165), (65, 320460), (70, 297570), (75, 277732), (78, 267050), (84, 247975), (91, 228900), (98, 212550), (100, 208299), (105, 198380), (109, 191100), (130, 160230), (140, 148785), (147, 141700), (150, 138866), (156, 133525), (175, 119028), (182, 114450), (195, 106820), (196, 106275), (210, 99190), (218, 95550), (245, 85020), (260, 80115), (273, 76300), (294, 70850), (300, 69433), (325, 64092), (327, 63700), (350, 59514), (364, 57225), (390, 53410), (420, 49595), (436, 47775), (455, 45780), (490, 42510), (525, 39676), (545, 38220), (546, 38150), (588, 35425), (637, 32700), (650, 32046), (654, 31850), (700, 29757), (735, 28340), (763, 27300), (780, 26705), (910, 22890), (975, 21364), (980, 21255), (1050, 19838), (1090, 19110), (1092, 19075), (1225, 17004), (1274, 16350), (1300, 16023), (1308, 15925), (1365, 15260), (1417, 14700), (1470, 14170), (1526, 13650), (1635, 12740), (1820, 11445), (1911, 10900), (1950, 10682), (2100, 9919), (2180, 9555), (2275, 9156), (2289, 9100), (2450, 8502), (2548, 8175), (2725, 7644), (2730, 7630), (2834, 7350), (2940, 7085), (3052, 6825), (3185, 6540), (3270, 6370), (3675, 5668), (3815, 5460), (3822, 5450), (3900, 5341), (4251, 4900), (4550, 4578)]