28887920

素因数分解:

$2^4\times 5^1\times {\mathrm{263}}^1\times {\mathrm{1373}}^1$

素因数の和:1649

約数の個数: 40

約数和(自身を含む): 67468896

約数和(自身を除く): 38580976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 263, 526, 1052, 1315, 1373, 2104, 2630, 2746, 4208, 5260, 5492, 6865, 10520, 10984, 13730, 21040, 21968, 27460, 54920, 109840, 361099, 722198, 1444396, 1805495, 2888792, 3610990, 5777584, 7221980, 14443960, 28887920]

約数ペア:

[(1, 28887920), (2, 14443960), (4, 7221980), (5, 5777584), (8, 3610990), (10, 2888792), (16, 1805495), (20, 1444396), (40, 722198), (80, 361099), (263, 109840), (526, 54920), (1052, 27460), (1315, 21968), (1373, 21040), (2104, 13730), (2630, 10984), (2746, 10520), (4208, 6865), (5260, 5492)]