28780654

素因数分解:

$2^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{503}}^1$

素因数の和:640

約数の個数: 32

約数和(自身を含む): 50996736

約数和(自身を除く): 22216082

約数列:

[1, 2, 7, 14, 61, 67, 122, 134, 427, 469, 503, 854, 938, 1006, 3521, 4087, 7042, 8174, 28609, 30683, 33701, 57218, 61366, 67402, 214781, 235907, 429562, 471814, 2055761, 4111522, 14390327, 28780654]

約数ペア:

[(1, 28780654), (2, 14390327), (7, 4111522), (14, 2055761), (61, 471814), (67, 429562), (122, 235907), (134, 214781), (427, 67402), (469, 61366), (503, 57218), (854, 33701), (938, 30683), (1006, 28609), (3521, 8174), (4087, 7042)]