21065360

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{4463}}^1$

素因数の和:4535

約数の個数: 40

約数和(自身を含む): 49818240

約数和(自身を除く): 28752880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360, 4463, 4720, 8926, 17852, 22315, 35704, 44630, 71408, 89260, 178520, 263317, 357040, 526634, 1053268, 1316585, 2106536, 2633170, 4213072, 5266340, 10532680, 21065360]

約数ペア:

[(1, 21065360), (2, 10532680), (4, 5266340), (5, 4213072), (8, 2633170), (10, 2106536), (16, 1316585), (20, 1053268), (40, 526634), (59, 357040), (80, 263317), (118, 178520), (236, 89260), (295, 71408), (472, 44630), (590, 35704), (944, 22315), (1180, 17852), (2360, 8926), (4463, 4720)]