21103280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23981}}^1$

素因数の和:24005

約数の個数: 40

約数和(自身を含む): 53527824

約数和(自身を除く): 32424544

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23981, 47962, 95924, 119905, 191848, 239810, 263791, 383696, 479620, 527582, 959240, 1055164, 1318955, 1918480, 2110328, 2637910, 4220656, 5275820, 10551640, 21103280]

約数ペア:

[(1, 21103280), (2, 10551640), (4, 5275820), (5, 4220656), (8, 2637910), (10, 2110328), (11, 1918480), (16, 1318955), (20, 1055164), (22, 959240), (40, 527582), (44, 479620), (55, 383696), (80, 263791), (88, 239810), (110, 191848), (176, 119905), (220, 95924), (440, 47962), (880, 23981)]