15866420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{163}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 34825728

約数和(自身を除く): 18959308

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 157, 163, 310, 314, 326, 620, 628, 652, 785, 815, 1570, 1630, 3140, 3260, 4867, 5053, 9734, 10106, 19468, 20212, 24335, 25265, 25591, 48670, 50530, 51182, 97340, 101060, 102364, 127955, 255910, 511820, 793321, 1586642, 3173284, 3966605, 7933210, 15866420]

約数ペア:

[(1, 15866420), (2, 7933210), (4, 3966605), (5, 3173284), (10, 1586642), (20, 793321), (31, 511820), (62, 255910), (124, 127955), (155, 102364), (157, 101060), (163, 97340), (310, 51182), (314, 50530), (326, 48670), (620, 25591), (628, 25265), (652, 24335), (785, 20212), (815, 19468), (1570, 10106), (1630, 9734), (3140, 5053), (3260, 4867)]