2017821950

素因数分解:

$2^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{409}}^1\times {\mathrm{1249}}^1$

素因数の和:1749

約数の個数: 48

約数和(自身を含む): 3813000000

約数和(自身を除く): 1795178050

約数列:

[1, 2, 5, 10, 25, 50, 79, 158, 395, 409, 790, 818, 1249, 1975, 2045, 2498, 3950, 4090, 6245, 10225, 12490, 20450, 31225, 32311, 62450, 64622, 98671, 161555, 197342, 323110, 493355, 510841, 807775, 986710, 1021682, 1615550, 2466775, 2554205, 4933550, 5108410, 12771025, 25542050, 40356439, 80712878, 201782195, 403564390, 1008910975, 2017821950]

約数ペア:

[(1, 2017821950), (2, 1008910975), (5, 403564390), (10, 201782195), (25, 80712878), (50, 40356439), (79, 25542050), (158, 12771025), (395, 5108410), (409, 4933550), (790, 2554205), (818, 2466775), (1249, 1615550), (1975, 1021682), (2045, 986710), (2498, 807775), (3950, 510841), (4090, 493355), (6245, 323110), (10225, 197342), (12490, 161555), (20450, 98671), (31225, 64622), (32311, 62450)]