21000514816

素因数分解:

$2^8\times {\mathrm{293}}^1\times {\mathrm{279977}}^1$

素因数の和:280286

約数の個数: 36

約数和(自身を含む): 42062214852

約数和(自身を除く): 21061700036

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 293, 586, 1172, 2344, 4688, 9376, 18752, 37504, 75008, 279977, 559954, 1119908, 2239816, 4479632, 8959264, 17918528, 35837056, 71674112, 82033261, 164066522, 328133044, 656266088, 1312532176, 2625064352, 5250128704, 10500257408, 21000514816]

約数ペア:

[(1, 21000514816), (2, 10500257408), (4, 5250128704), (8, 2625064352), (16, 1312532176), (32, 656266088), (64, 328133044), (128, 164066522), (256, 82033261), (293, 71674112), (586, 35837056), (1172, 17918528), (2344, 8959264), (4688, 4479632), (9376, 2239816), (18752, 1119908), (37504, 559954), (75008, 279977)]