20167910

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{521}}^1$

素因数の和:621

約数の個数: 48

約数和(自身を含む): 42845760

約数和(自身を除く): 22677850

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 79, 98, 158, 245, 395, 490, 521, 553, 790, 1042, 1106, 2605, 2765, 3647, 3871, 5210, 5530, 7294, 7742, 18235, 19355, 25529, 36470, 38710, 41159, 51058, 82318, 127645, 205795, 255290, 288113, 411590, 576226, 1440565, 2016791, 2881130, 4033582, 10083955, 20167910]

約数ペア:

[(1, 20167910), (2, 10083955), (5, 4033582), (7, 2881130), (10, 2016791), (14, 1440565), (35, 576226), (49, 411590), (70, 288113), (79, 255290), (98, 205795), (158, 127645), (245, 82318), (395, 51058), (490, 41159), (521, 38710), (553, 36470), (790, 25529), (1042, 19355), (1106, 18235), (2605, 7742), (2765, 7294), (3647, 5530), (3871, 5210)]