21189375

素因数分解:

$3^2\times 5^4\times {\mathrm{3767}}^1$

素因数の和:3793

約数の個数: 30

約数和(自身を含む): 38256504

約数和(自身を除く): 17067129

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 125, 225, 375, 625, 1125, 1875, 3767, 5625, 11301, 18835, 33903, 56505, 94175, 169515, 282525, 470875, 847575, 1412625, 2354375, 4237875, 7063125, 21189375]

約数ペア:

[(1, 21189375), (3, 7063125), (5, 4237875), (9, 2354375), (15, 1412625), (25, 847575), (45, 470875), (75, 282525), (125, 169515), (225, 94175), (375, 56505), (625, 33903), (1125, 18835), (1875, 11301), (3767, 5625)]