18868237720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{631}}^1\times {\mathrm{18233}}^1$

素因数の和:18916

約数の個数: 64

約数和(自身を含む): 43560296640

約数和(自身を除く): 24692058920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 631, 820, 1262, 1640, 2524, 3155, 5048, 6310, 12620, 18233, 25240, 25871, 36466, 51742, 72932, 91165, 103484, 129355, 145864, 182330, 206968, 258710, 364660, 517420, 729320, 747553, 1034840, 1495106, 2990212, 3737765, 5980424, 7475530, 11505023, 14951060, 23010046, 29902120, 46020092, 57525115, 92040184, 115050230, 230100460, 460200920, 471705943, 943411886, 1886823772, 2358529715, 3773647544, 4717059430, 9434118860, 18868237720]

約数ペア:

[(1, 18868237720), (2, 9434118860), (4, 4717059430), (5, 3773647544), (8, 2358529715), (10, 1886823772), (20, 943411886), (40, 471705943), (41, 460200920), (82, 230100460), (164, 115050230), (205, 92040184), (328, 57525115), (410, 46020092), (631, 29902120), (820, 23010046), (1262, 14951060), (1640, 11505023), (2524, 7475530), (3155, 5980424), (5048, 3737765), (6310, 2990212), (12620, 1495106), (18233, 1034840), (25240, 747553), (25871, 729320), (36466, 517420), (51742, 364660), (72932, 258710), (91165, 206968), (103484, 182330), (129355, 145864)]