81501212

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1\times {\mathrm{157}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 157936800

約数和(自身を除く): 76435588

約数列:

[1, 2, 4, 13, 26, 52, 67, 134, 149, 157, 268, 298, 314, 596, 628, 871, 1742, 1937, 2041, 3484, 3874, 4082, 7748, 8164, 9983, 10519, 19966, 21038, 23393, 39932, 42076, 46786, 93572, 129779, 136747, 259558, 273494, 304109, 519116, 546988, 608218, 1216436, 1567331, 3134662, 6269324, 20375303, 40750606, 81501212]

約数ペア:

[(1, 81501212), (2, 40750606), (4, 20375303), (13, 6269324), (26, 3134662), (52, 1567331), (67, 1216436), (134, 608218), (149, 546988), (157, 519116), (268, 304109), (298, 273494), (314, 259558), (596, 136747), (628, 129779), (871, 93572), (1742, 46786), (1937, 42076), (2041, 39932), (3484, 23393), (3874, 21038), (4082, 19966), (7748, 10519), (8164, 9983)]