18708996880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{661}}^1\times {\mathrm{50543}}^1$

素因数の和:51224

約数の個数: 80

約数和(自身を含む): 49788670464

約数和(自身を除く): 31079673584

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 661, 1322, 2644, 3305, 4627, 5288, 6610, 9254, 10576, 13220, 18508, 23135, 26440, 37016, 46270, 50543, 52880, 74032, 92540, 101086, 185080, 202172, 252715, 353801, 370160, 404344, 505430, 707602, 808688, 1010860, 1415204, 1769005, 2021720, 2830408, 3538010, 4043440, 5660816, 7076020, 14152040, 28304080, 33408923, 66817846, 133635692, 167044615, 233862461, 267271384, 334089230, 467724922, 534542768, 668178460, 935449844, 1169312305, 1336356920, 1870899688, 2338624610, 2672713840, 3741799376, 4677249220, 9354498440, 18708996880]

約数ペア:

[(1, 18708996880), (2, 9354498440), (4, 4677249220), (5, 3741799376), (7, 2672713840), (8, 2338624610), (10, 1870899688), (14, 1336356920), (16, 1169312305), (20, 935449844), (28, 668178460), (35, 534542768), (40, 467724922), (56, 334089230), (70, 267271384), (80, 233862461), (112, 167044615), (140, 133635692), (280, 66817846), (560, 33408923), (661, 28304080), (1322, 14152040), (2644, 7076020), (3305, 5660816), (4627, 4043440), (5288, 3538010), (6610, 2830408), (9254, 2021720), (10576, 1769005), (13220, 1415204), (18508, 1010860), (23135, 808688), (26440, 707602), (37016, 505430), (46270, 404344), (50543, 370160), (52880, 353801), (74032, 252715), (92540, 202172), (101086, 185080)]