128515778

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1\times {\mathrm{149}}^1$

素因数の和:386

約数の個数: 32

約数和(自身を含む): 202176000

約数和(自身を除く): 73660222

約数列:

[1, 2, 53, 79, 103, 106, 149, 158, 206, 298, 4187, 5459, 7897, 8137, 8374, 10918, 11771, 15347, 15794, 16274, 23542, 30694, 431261, 623863, 813391, 862522, 1212413, 1247726, 1626782, 2424826, 64257889, 128515778]

約数ペア:

[(1, 128515778), (2, 64257889), (53, 2424826), (79, 1626782), (103, 1247726), (106, 1212413), (149, 862522), (158, 813391), (206, 623863), (298, 431261), (4187, 30694), (5459, 23542), (7897, 16274), (8137, 15794), (8374, 15347), (10918, 11771)]