80657140

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1\times {\mathrm{401}}^1$

素因数の和:612

約数の個数: 48

約数和(自身を含む): 173229840

約数和(自身を除く): 92572700

約数列:

[1, 2, 4, 5, 10, 20, 89, 113, 178, 226, 356, 401, 445, 452, 565, 802, 890, 1130, 1604, 1780, 2005, 2260, 4010, 8020, 10057, 20114, 35689, 40228, 45313, 50285, 71378, 90626, 100570, 142756, 178445, 181252, 201140, 226565, 356890, 453130, 713780, 906260, 4032857, 8065714, 16131428, 20164285, 40328570, 80657140]

約数ペア:

[(1, 80657140), (2, 40328570), (4, 20164285), (5, 16131428), (10, 8065714), (20, 4032857), (89, 906260), (113, 713780), (178, 453130), (226, 356890), (356, 226565), (401, 201140), (445, 181252), (452, 178445), (565, 142756), (802, 100570), (890, 90626), (1130, 71378), (1604, 50285), (1780, 45313), (2005, 40228), (2260, 35689), (4010, 20114), (8020, 10057)]