21080528

素因数分解:

$2^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{5087}}^1$

素因数の和:5139

約数の個数: 40

約数和(自身を含む): 47949312

約数和(自身を除く): 26868784

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 37, 56, 74, 112, 148, 259, 296, 518, 592, 1036, 2072, 4144, 5087, 10174, 20348, 35609, 40696, 71218, 81392, 142436, 188219, 284872, 376438, 569744, 752876, 1317533, 1505752, 2635066, 3011504, 5270132, 10540264, 21080528]

約数ペア:

[(1, 21080528), (2, 10540264), (4, 5270132), (7, 3011504), (8, 2635066), (14, 1505752), (16, 1317533), (28, 752876), (37, 569744), (56, 376438), (74, 284872), (112, 188219), (148, 142436), (259, 81392), (296, 71218), (518, 40696), (592, 35609), (1036, 20348), (2072, 10174), (4144, 5087)]