19909874

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1$

素因数の和:242

約数の個数: 32

約数和(自身を含む): 32223744

約数和(自身を除く): 12313870

約数列:

[1, 2, 31, 53, 62, 73, 83, 106, 146, 166, 1643, 2263, 2573, 3286, 3869, 4399, 4526, 5146, 6059, 7738, 8798, 12118, 119939, 136369, 187829, 239878, 272738, 321127, 375658, 642254, 9954937, 19909874]

約数ペア:

[(1, 19909874), (2, 9954937), (31, 642254), (53, 375658), (62, 321127), (73, 272738), (83, 239878), (106, 187829), (146, 136369), (166, 119939), (1643, 12118), (2263, 8798), (2573, 7738), (3286, 6059), (3869, 5146), (4399, 4526)]