128545240

素因数分解:

$2^3\times 5^1\times {\mathrm{461}}^1\times {\mathrm{6971}}^1$

素因数の和:7443

約数の個数: 32

約数和(自身を含む): 289895760

約数和(自身を除く): 161350520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 461, 922, 1844, 2305, 3688, 4610, 6971, 9220, 13942, 18440, 27884, 34855, 55768, 69710, 139420, 278840, 3213631, 6427262, 12854524, 16068155, 25709048, 32136310, 64272620, 128545240]

約数ペア:

[(1, 128545240), (2, 64272620), (4, 32136310), (5, 25709048), (8, 16068155), (10, 12854524), (20, 6427262), (40, 3213631), (461, 278840), (922, 139420), (1844, 69710), (2305, 55768), (3688, 34855), (4610, 27884), (6971, 18440), (9220, 13942)]