8156920

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{3343}}^1$

素因数の和:3415

約数の個数: 32

約数和(自身を含む): 18659520

約数和(自身を除く): 10502600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 3343, 6686, 13372, 16715, 26744, 33430, 66860, 133720, 203923, 407846, 815692, 1019615, 1631384, 2039230, 4078460, 8156920]

約数ペア:

[(1, 8156920), (2, 4078460), (4, 2039230), (5, 1631384), (8, 1019615), (10, 815692), (20, 407846), (40, 203923), (61, 133720), (122, 66860), (244, 33430), (305, 26744), (488, 16715), (610, 13372), (1220, 6686), (2440, 3343)]