18901688

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{10691}}^1$

素因数の和:10727

約数の個数: 32

約数和(自身を含む): 40415760

約数和(自身を除く): 21514072

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 221, 442, 884, 1768, 10691, 21382, 42764, 85528, 138983, 181747, 277966, 363494, 555932, 726988, 1111864, 1453976, 2362711, 4725422, 9450844, 18901688]

約数ペア:

[(1, 18901688), (2, 9450844), (4, 4725422), (8, 2362711), (13, 1453976), (17, 1111864), (26, 726988), (34, 555932), (52, 363494), (68, 277966), (104, 181747), (136, 138983), (221, 85528), (442, 42764), (884, 21382), (1768, 10691)]