18640570

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{643}}^1$

素因数の和:886

約数の個数: 32

約数和(自身を含む): 36352512

約数和(自身を除く): 17711942

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 223, 446, 643, 1115, 1286, 2230, 2899, 3215, 5798, 6430, 8359, 14495, 16718, 28990, 41795, 83590, 143389, 286778, 716945, 1433890, 1864057, 3728114, 9320285, 18640570]

約数ペア:

[(1, 18640570), (2, 9320285), (5, 3728114), (10, 1864057), (13, 1433890), (26, 716945), (65, 286778), (130, 143389), (223, 83590), (446, 41795), (643, 28990), (1115, 16718), (1286, 14495), (2230, 8359), (2899, 6430), (3215, 5798)]