988394990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{208963}}^1$

素因数の和:209024

約数の個数: 32

約数和(自身を含む): 1985993856

約数和(自身を除く): 997598866

約数列:

[1, 2, 5, 10, 11, 22, 43, 55, 86, 110, 215, 430, 473, 946, 2365, 4730, 208963, 417926, 1044815, 2089630, 2298593, 4597186, 8985409, 11492965, 17970818, 22985930, 44927045, 89854090, 98839499, 197678998, 494197495, 988394990]

約数ペア:

[(1, 988394990), (2, 494197495), (5, 197678998), (10, 98839499), (11, 89854090), (22, 44927045), (43, 22985930), (55, 17970818), (86, 11492965), (110, 8985409), (215, 4597186), (430, 2298593), (473, 2089630), (946, 1044815), (2365, 417926), (4730, 208963)]