21355360

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{10267}}^1$

素因数の和:10295

約数の個数: 48

約数和(自身を含む): 54338256

約数和(自身を除く): 32982896

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 10267, 20534, 41068, 51335, 82136, 102670, 133471, 164272, 205340, 266942, 328544, 410680, 533884, 667355, 821360, 1067768, 1334710, 1642720, 2135536, 2669420, 4271072, 5338840, 10677680, 21355360]

約数ペア:

[(1, 21355360), (2, 10677680), (4, 5338840), (5, 4271072), (8, 2669420), (10, 2135536), (13, 1642720), (16, 1334710), (20, 1067768), (26, 821360), (32, 667355), (40, 533884), (52, 410680), (65, 328544), (80, 266942), (104, 205340), (130, 164272), (160, 133471), (208, 102670), (260, 82136), (416, 51335), (520, 41068), (1040, 20534), (2080, 10267)]