21046960

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23917}}^1$

素因数の和:23941

約数の個数: 40

約数和(自身を含む): 53384976

約数和(自身を除く): 32338016

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23917, 47834, 95668, 119585, 191336, 239170, 263087, 382672, 478340, 526174, 956680, 1052348, 1315435, 1913360, 2104696, 2630870, 4209392, 5261740, 10523480, 21046960]

約数ペア:

[(1, 21046960), (2, 10523480), (4, 5261740), (5, 4209392), (8, 2630870), (10, 2104696), (11, 1913360), (16, 1315435), (20, 1052348), (22, 956680), (40, 526174), (44, 478340), (55, 382672), (80, 263087), (88, 239170), (110, 191336), (176, 119585), (220, 95668), (440, 47834), (880, 23917)]