201518380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{3371}}^1$

素因数の和:3455

約数の個数: 72

約数和(自身を含む): 500499216

約数和(自身を除く): 298980836

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 61, 70, 98, 122, 140, 196, 244, 245, 305, 427, 490, 610, 854, 980, 1220, 1708, 2135, 2989, 3371, 4270, 5978, 6742, 8540, 11956, 13484, 14945, 16855, 23597, 29890, 33710, 47194, 59780, 67420, 94388, 117985, 165179, 205631, 235970, 330358, 411262, 471940, 660716, 822524, 825895, 1028155, 1439417, 1651790, 2056310, 2878834, 3303580, 4112620, 5757668, 7197085, 10075919, 14394170, 20151838, 28788340, 40303676, 50379595, 100759190, 201518380]

約数ペア:

[(1, 201518380), (2, 100759190), (4, 50379595), (5, 40303676), (7, 28788340), (10, 20151838), (14, 14394170), (20, 10075919), (28, 7197085), (35, 5757668), (49, 4112620), (61, 3303580), (70, 2878834), (98, 2056310), (122, 1651790), (140, 1439417), (196, 1028155), (244, 825895), (245, 822524), (305, 660716), (427, 471940), (490, 411262), (610, 330358), (854, 235970), (980, 205631), (1220, 165179), (1708, 117985), (2135, 94388), (2989, 67420), (3371, 59780), (4270, 47194), (5978, 33710), (6742, 29890), (8540, 23597), (11956, 16855), (13484, 14945)]