18661989995

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{823}}^1\times {\mathrm{2767}}^1$

素因数の和:3755

約数の個数: 32

約数和(自身を含む): 24632985600

約数和(自身を除く): 5970995605

約数列:

[1, 5, 11, 55, 149, 745, 823, 1639, 2767, 4115, 8195, 9053, 13835, 30437, 45265, 122627, 152185, 412283, 613135, 1348897, 2061415, 2277241, 4535113, 6744485, 11386205, 22675565, 25049651, 125248255, 339308909, 1696544545, 3732397999, 18661989995]

約数ペア:

[(1, 18661989995), (5, 3732397999), (11, 1696544545), (55, 339308909), (149, 125248255), (745, 25049651), (823, 22675565), (1639, 11386205), (2767, 6744485), (4115, 4535113), (8195, 2277241), (9053, 2061415), (13835, 1348897), (30437, 613135), (45265, 412283), (122627, 152185)]