20861820

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{5519}}^1$

素因数の和:5544

約数の個数: 96

約数和(自身を含む): 74188800

約数和(自身を除く): 53326980

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 540, 630, 756, 945, 1260, 1890, 3780, 5519, 11038, 16557, 22076, 27595, 33114, 38633, 49671, 55190, 66228, 77266, 82785, 99342, 110380, 115899, 149013, 154532, 165570, 193165, 198684, 231798, 248355, 298026, 331140, 347697, 386330, 463596, 496710, 579495, 596052, 695394, 745065, 772660, 993420, 1043091, 1158990, 1390788, 1490130, 1738485, 2086182, 2317980, 2980260, 3476970, 4172364, 5215455, 6953940, 10430910, 20861820]

約数ペア:

[(1, 20861820), (2, 10430910), (3, 6953940), (4, 5215455), (5, 4172364), (6, 3476970), (7, 2980260), (9, 2317980), (10, 2086182), (12, 1738485), (14, 1490130), (15, 1390788), (18, 1158990), (20, 1043091), (21, 993420), (27, 772660), (28, 745065), (30, 695394), (35, 596052), (36, 579495), (42, 496710), (45, 463596), (54, 386330), (60, 347697), (63, 331140), (70, 298026), (84, 248355), (90, 231798), (105, 198684), (108, 193165), (126, 165570), (135, 154532), (140, 149013), (180, 115899), (189, 110380), (210, 99342), (252, 82785), (270, 77266), (315, 66228), (378, 55190), (420, 49671), (540, 38633), (630, 33114), (756, 27595), (945, 22076), (1260, 16557), (1890, 11038), (3780, 5519)]