21169125

素因数分解:

$3^2\times 5^3\times {\mathrm{31}}^1\times {\mathrm{607}}^1$

素因数の和:659

約数の個数: 48

約数和(自身を含む): 39456768

約数和(自身を除く): 18287643

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 75, 93, 125, 155, 225, 279, 375, 465, 607, 775, 1125, 1395, 1821, 2325, 3035, 3875, 5463, 6975, 9105, 11625, 15175, 18817, 27315, 34875, 45525, 56451, 75875, 94085, 136575, 169353, 227625, 282255, 470425, 682875, 846765, 1411275, 2352125, 4233825, 7056375, 21169125]

約数ペア:

[(1, 21169125), (3, 7056375), (5, 4233825), (9, 2352125), (15, 1411275), (25, 846765), (31, 682875), (45, 470425), (75, 282255), (93, 227625), (125, 169353), (155, 136575), (225, 94085), (279, 75875), (375, 56451), (465, 45525), (607, 34875), (775, 27315), (1125, 18817), (1395, 15175), (1821, 11625), (2325, 9105), (3035, 6975), (3875, 5463)]