28775920

素因数分解:

$2^4\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1613}}^1$

素因数の和:1849

約数の個数: 40

約数和(自身を含む): 67245696

約数和(自身を除く): 38469776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 892, 1115, 1613, 1784, 2230, 3226, 3568, 4460, 6452, 8065, 8920, 12904, 16130, 17840, 25808, 32260, 64520, 129040, 359699, 719398, 1438796, 1798495, 2877592, 3596990, 5755184, 7193980, 14387960, 28775920]

約数ペア:

[(1, 28775920), (2, 14387960), (4, 7193980), (5, 5755184), (8, 3596990), (10, 2877592), (16, 1798495), (20, 1438796), (40, 719398), (80, 359699), (223, 129040), (446, 64520), (892, 32260), (1115, 25808), (1613, 17840), (1784, 16130), (2230, 12904), (3226, 8920), (3568, 8065), (4460, 6452)]