21000928

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2657}}^1$

素因数の和:2699

約数の個数: 48

約数和(自身を含む): 46887120

約数和(自身を除く): 25886192

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 76, 104, 152, 208, 247, 304, 416, 494, 608, 988, 1976, 2657, 3952, 5314, 7904, 10628, 21256, 34541, 42512, 50483, 69082, 85024, 100966, 138164, 201932, 276328, 403864, 552656, 656279, 807728, 1105312, 1312558, 1615456, 2625116, 5250232, 10500464, 21000928]

約数ペア:

[(1, 21000928), (2, 10500464), (4, 5250232), (8, 2625116), (13, 1615456), (16, 1312558), (19, 1105312), (26, 807728), (32, 656279), (38, 552656), (52, 403864), (76, 276328), (104, 201932), (152, 138164), (208, 100966), (247, 85024), (304, 69082), (416, 50483), (494, 42512), (608, 34541), (988, 21256), (1976, 10628), (2657, 7904), (3952, 5314)]