21295125

素因数分解:

$3^2\times 5^3\times {\mathrm{23}}^1\times {\mathrm{823}}^1$

素因数の和:867

約数の個数: 48

約数和(自身を含む): 40105728

約数和(自身を除く): 18810603

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 115, 125, 207, 225, 345, 375, 575, 823, 1035, 1125, 1725, 2469, 2875, 4115, 5175, 7407, 8625, 12345, 18929, 20575, 25875, 37035, 56787, 61725, 94645, 102875, 170361, 185175, 283935, 308625, 473225, 851805, 925875, 1419675, 2366125, 4259025, 7098375, 21295125]

約数ペア:

[(1, 21295125), (3, 7098375), (5, 4259025), (9, 2366125), (15, 1419675), (23, 925875), (25, 851805), (45, 473225), (69, 308625), (75, 283935), (115, 185175), (125, 170361), (207, 102875), (225, 94645), (345, 61725), (375, 56787), (575, 37035), (823, 25875), (1035, 20575), (1125, 18929), (1725, 12345), (2469, 8625), (2875, 7407), (4115, 5175)]