21330320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{24239}}^1$

素因数の和:24263

約数の個数: 40

約数和(自身を含む): 54103680

約数和(自身を除く): 32773360

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 24239, 48478, 96956, 121195, 193912, 242390, 266629, 387824, 484780, 533258, 969560, 1066516, 1333145, 1939120, 2133032, 2666290, 4266064, 5332580, 10665160, 21330320]

約数ペア:

[(1, 21330320), (2, 10665160), (4, 5332580), (5, 4266064), (8, 2666290), (10, 2133032), (11, 1939120), (16, 1333145), (20, 1066516), (22, 969560), (40, 533258), (44, 484780), (55, 387824), (80, 266629), (88, 242390), (110, 193912), (176, 121195), (220, 96956), (440, 48478), (880, 24239)]