21579376

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{14821}}^1$

素因数の和:14849

約数の個数: 40

約数和(自身を含む): 51461984

約数和(自身を除く): 29882608

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 14821, 29642, 59284, 103747, 118568, 192673, 207494, 237136, 385346, 414988, 770692, 829976, 1348711, 1541384, 1659952, 2697422, 3082768, 5394844, 10789688, 21579376]

約数ペア:

[(1, 21579376), (2, 10789688), (4, 5394844), (7, 3082768), (8, 2697422), (13, 1659952), (14, 1541384), (16, 1348711), (26, 829976), (28, 770692), (52, 414988), (56, 385346), (91, 237136), (104, 207494), (112, 192673), (182, 118568), (208, 103747), (364, 59284), (728, 29642), (1456, 14821)]