21000427970

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{337}}^1\times {\mathrm{117577}}^1$

素因数の和:117974

約数の個数: 32

約数和(自身を含む): 38628605808

約数和(自身を除く): 17628177838

約数列:

[1, 2, 5, 10, 53, 106, 265, 337, 530, 674, 1685, 3370, 17861, 35722, 89305, 117577, 178610, 235154, 587885, 1175770, 6231581, 12463162, 31157905, 39623449, 62315810, 79246898, 198117245, 396234490, 2100042797, 4200085594, 10500213985, 21000427970]

約数ペア:

[(1, 21000427970), (2, 10500213985), (5, 4200085594), (10, 2100042797), (53, 396234490), (106, 198117245), (265, 79246898), (337, 62315810), (530, 39623449), (674, 31157905), (1685, 12463162), (3370, 6231581), (17861, 1175770), (35722, 587885), (89305, 235154), (117577, 178610)]