19927575

素因数分解:

$3^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{2857}}^1$

素因数の和:2904

約数の個数: 36

約数和(自身を含む): 36856768

約数和(自身を除く): 16929193

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 75, 93, 155, 225, 279, 465, 775, 1395, 2325, 2857, 6975, 8571, 14285, 25713, 42855, 71425, 88567, 128565, 214275, 265701, 442835, 642825, 797103, 1328505, 2214175, 3985515, 6642525, 19927575]

約数ペア:

[(1, 19927575), (3, 6642525), (5, 3985515), (9, 2214175), (15, 1328505), (25, 797103), (31, 642825), (45, 442835), (75, 265701), (93, 214275), (155, 128565), (225, 88567), (279, 71425), (465, 42855), (775, 25713), (1395, 14285), (2325, 8571), (2857, 6975)]