21000528

素因数分解:

$2^4\times 3^2\times {\mathrm{41}}^1\times {\mathrm{3557}}^1$

素因数の和:3612

約数の個数: 60

約数和(自身を含む): 60222708

約数和(自身を除く): 39222180

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 41, 48, 72, 82, 123, 144, 164, 246, 328, 369, 492, 656, 738, 984, 1476, 1968, 2952, 3557, 5904, 7114, 10671, 14228, 21342, 28456, 32013, 42684, 56912, 64026, 85368, 128052, 145837, 170736, 256104, 291674, 437511, 512208, 583348, 875022, 1166696, 1312533, 1750044, 2333392, 2625066, 3500088, 5250132, 7000176, 10500264, 21000528]

約数ペア:

[(1, 21000528), (2, 10500264), (3, 7000176), (4, 5250132), (6, 3500088), (8, 2625066), (9, 2333392), (12, 1750044), (16, 1312533), (18, 1166696), (24, 875022), (36, 583348), (41, 512208), (48, 437511), (72, 291674), (82, 256104), (123, 170736), (144, 145837), (164, 128052), (246, 85368), (328, 64026), (369, 56912), (492, 42684), (656, 32013), (738, 28456), (984, 21342), (1476, 14228), (1968, 10671), (2952, 7114), (3557, 5904)]