19913625

素因数分解:

$3^2\times 5^3\times {\mathrm{31}}^1\times {\mathrm{571}}^1$

素因数の和:623

約数の個数: 48

約数和(自身を含む): 37120512

約数和(自身を除く): 17206887

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 75, 93, 125, 155, 225, 279, 375, 465, 571, 775, 1125, 1395, 1713, 2325, 2855, 3875, 5139, 6975, 8565, 11625, 14275, 17701, 25695, 34875, 42825, 53103, 71375, 88505, 128475, 159309, 214125, 265515, 442525, 642375, 796545, 1327575, 2212625, 3982725, 6637875, 19913625]

約数ペア:

[(1, 19913625), (3, 6637875), (5, 3982725), (9, 2212625), (15, 1327575), (25, 796545), (31, 642375), (45, 442525), (75, 265515), (93, 214125), (125, 159309), (155, 128475), (225, 88505), (279, 71375), (375, 53103), (465, 42825), (571, 34875), (775, 25695), (1125, 17701), (1395, 14275), (1713, 11625), (2325, 8565), (2855, 6975), (3875, 5139)]