31810540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{787}}^1$

素因数の和:886

約数の個数: 48

約数和(自身を含む): 69898752

約数和(自身を除く): 38088212

約数列:

[1, 2, 4, 5, 10, 20, 43, 47, 86, 94, 172, 188, 215, 235, 430, 470, 787, 860, 940, 1574, 2021, 3148, 3935, 4042, 7870, 8084, 10105, 15740, 20210, 33841, 36989, 40420, 67682, 73978, 135364, 147956, 169205, 184945, 338410, 369890, 676820, 739780, 1590527, 3181054, 6362108, 7952635, 15905270, 31810540]

約数ペア:

[(1, 31810540), (2, 15905270), (4, 7952635), (5, 6362108), (10, 3181054), (20, 1590527), (43, 739780), (47, 676820), (86, 369890), (94, 338410), (172, 184945), (188, 169205), (215, 147956), (235, 135364), (430, 73978), (470, 67682), (787, 40420), (860, 36989), (940, 33841), (1574, 20210), (2021, 15740), (3148, 10105), (3935, 8084), (4042, 7870)]