20556825

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{701}}^1$

素因数の和:754

約数の個数: 48

約数和(自身を含む): 37604736

約数和(自身を除く): 17047911

約数列:

[1, 3, 5, 15, 17, 23, 25, 51, 69, 75, 85, 115, 255, 345, 391, 425, 575, 701, 1173, 1275, 1725, 1955, 2103, 3505, 5865, 9775, 10515, 11917, 16123, 17525, 29325, 35751, 48369, 52575, 59585, 80615, 178755, 241845, 274091, 297925, 403075, 822273, 893775, 1209225, 1370455, 4111365, 6852275, 20556825]

約数ペア:

[(1, 20556825), (3, 6852275), (5, 4111365), (15, 1370455), (17, 1209225), (23, 893775), (25, 822273), (51, 403075), (69, 297925), (75, 274091), (85, 241845), (115, 178755), (255, 80615), (345, 59585), (391, 52575), (425, 48369), (575, 35751), (701, 29325), (1173, 17525), (1275, 16123), (1725, 11917), (1955, 10515), (2103, 9775), (3505, 5865)]