21268720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{24169}}^1$

素因数の和:24193

約数の個数: 40

約数和(自身を含む): 53947440

約数和(自身を除く): 32678720

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 24169, 48338, 96676, 120845, 193352, 241690, 265859, 386704, 483380, 531718, 966760, 1063436, 1329295, 1933520, 2126872, 2658590, 4253744, 5317180, 10634360, 21268720]

約数ペア:

[(1, 21268720), (2, 10634360), (4, 5317180), (5, 4253744), (8, 2658590), (10, 2126872), (11, 1933520), (16, 1329295), (20, 1063436), (22, 966760), (40, 531718), (44, 483380), (55, 386704), (80, 265859), (88, 241690), (110, 193352), (176, 120845), (220, 96676), (440, 48338), (880, 24169)]