21100960

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3067}}^1$

素因数の和:3125

約数の個数: 48

約数和(自身を含む): 51026976

約数和(自身を除く): 29926016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 3067, 3440, 6134, 6880, 12268, 15335, 24536, 30670, 49072, 61340, 98144, 122680, 131881, 245360, 263762, 490720, 527524, 659405, 1055048, 1318810, 2110096, 2637620, 4220192, 5275240, 10550480, 21100960]

約数ペア:

[(1, 21100960), (2, 10550480), (4, 5275240), (5, 4220192), (8, 2637620), (10, 2110096), (16, 1318810), (20, 1055048), (32, 659405), (40, 527524), (43, 490720), (80, 263762), (86, 245360), (160, 131881), (172, 122680), (215, 98144), (344, 61340), (430, 49072), (688, 30670), (860, 24536), (1376, 15335), (1720, 12268), (3067, 6880), (3440, 6134)]