81153520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{144917}}^1$

素因数の和:144937

約数の個数: 40

約数和(自身を含む): 215637984

約数和(自身を除く): 134484464

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 144917, 289834, 579668, 724585, 1014419, 1159336, 1449170, 2028838, 2318672, 2898340, 4057676, 5072095, 5796680, 8115352, 10144190, 11593360, 16230704, 20288380, 40576760, 81153520]

約数ペア:

[(1, 81153520), (2, 40576760), (4, 20288380), (5, 16230704), (7, 11593360), (8, 10144190), (10, 8115352), (14, 5796680), (16, 5072095), (20, 4057676), (28, 2898340), (35, 2318672), (40, 2028838), (56, 1449170), (70, 1159336), (80, 1014419), (112, 724585), (140, 579668), (280, 289834), (560, 144917)]