55813720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{389}}^1$

素因数の和:628

約数の個数: 64

約数和(自身を含む): 133941600

約数和(自身を除く): 78127880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 211, 340, 389, 422, 680, 778, 844, 1055, 1556, 1688, 1945, 2110, 3112, 3587, 3890, 4220, 6613, 7174, 7780, 8440, 13226, 14348, 15560, 17935, 26452, 28696, 33065, 35870, 52904, 66130, 71740, 82079, 132260, 143480, 164158, 264520, 328316, 410395, 656632, 820790, 1395343, 1641580, 2790686, 3283160, 5581372, 6976715, 11162744, 13953430, 27906860, 55813720]

約数ペア:

[(1, 55813720), (2, 27906860), (4, 13953430), (5, 11162744), (8, 6976715), (10, 5581372), (17, 3283160), (20, 2790686), (34, 1641580), (40, 1395343), (68, 820790), (85, 656632), (136, 410395), (170, 328316), (211, 264520), (340, 164158), (389, 143480), (422, 132260), (680, 82079), (778, 71740), (844, 66130), (1055, 52904), (1556, 35870), (1688, 33065), (1945, 28696), (2110, 26452), (3112, 17935), (3587, 15560), (3890, 14348), (4220, 13226), (6613, 8440), (7174, 7780)]