18312490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1997}}^1$

素因数の和:2142

約数の個数: 32

約数和(自身を含む): 37977984

約数和(自身を除く): 19665494

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 131, 262, 655, 917, 1310, 1834, 1997, 3994, 4585, 9170, 9985, 13979, 19970, 27958, 69895, 139790, 261607, 523214, 1308035, 1831249, 2616070, 3662498, 9156245, 18312490]

約数ペア:

[(1, 18312490), (2, 9156245), (5, 3662498), (7, 2616070), (10, 1831249), (14, 1308035), (35, 523214), (70, 261607), (131, 139790), (262, 69895), (655, 27958), (917, 19970), (1310, 13979), (1834, 9985), (1997, 9170), (3994, 4585)]