64534640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{42457}}^1$

素因数の和:42489

約数の個数: 40

約数和(自身を含む): 157943760

約数和(自身を除く): 93409120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 42457, 84914, 169828, 212285, 339656, 424570, 679312, 806683, 849140, 1613366, 1698280, 3226732, 3396560, 4033415, 6453464, 8066830, 12906928, 16133660, 32267320, 64534640]

約数ペア:

[(1, 64534640), (2, 32267320), (4, 16133660), (5, 12906928), (8, 8066830), (10, 6453464), (16, 4033415), (19, 3396560), (20, 3226732), (38, 1698280), (40, 1613366), (76, 849140), (80, 806683), (95, 679312), (152, 424570), (190, 339656), (304, 212285), (380, 169828), (760, 84914), (1520, 42457)]