21925040

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{5171}}^1$

素因数の和:5237

約数の個数: 40

約数和(自身を含む): 51947568

約数和(自身を除く): 30022528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 5171, 10342, 20684, 25855, 41368, 51710, 82736, 103420, 206840, 274063, 413680, 548126, 1096252, 1370315, 2192504, 2740630, 4385008, 5481260, 10962520, 21925040]

約数ペア:

[(1, 21925040), (2, 10962520), (4, 5481260), (5, 4385008), (8, 2740630), (10, 2192504), (16, 1370315), (20, 1096252), (40, 548126), (53, 413680), (80, 274063), (106, 206840), (212, 103420), (265, 82736), (424, 51710), (530, 41368), (848, 25855), (1060, 20684), (2120, 10342), (4240, 5171)]