388632220

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{461}}^1\times {\mathrm{691}}^1$

素因数の和:1222

約数の個数: 48

約数和(自身を含む): 832509216

約数和(自身を除く): 443876996

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 461, 610, 691, 922, 1220, 1382, 1844, 2305, 2764, 3455, 4610, 6910, 9220, 13820, 28121, 42151, 56242, 84302, 112484, 140605, 168604, 210755, 281210, 318551, 421510, 562420, 637102, 843020, 1274204, 1592755, 3185510, 6371020, 19431611, 38863222, 77726444, 97158055, 194316110, 388632220]

約数ペア:

[(1, 388632220), (2, 194316110), (4, 97158055), (5, 77726444), (10, 38863222), (20, 19431611), (61, 6371020), (122, 3185510), (244, 1592755), (305, 1274204), (461, 843020), (610, 637102), (691, 562420), (922, 421510), (1220, 318551), (1382, 281210), (1844, 210755), (2305, 168604), (2764, 140605), (3455, 112484), (4610, 84302), (6910, 56242), (9220, 42151), (13820, 28121)]