215104005

素因数分解:

$3^4\times 5^1\times {\mathrm{531121}}^1$

素因数の和:531138

約数の個数: 20

約数和(自身を含む): 385594572

約数和(自身を除く): 170490567

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 531121, 1593363, 2655605, 4780089, 7966815, 14340267, 23900445, 43020801, 71701335, 215104005]

約数ペア:

[(1, 215104005), (3, 71701335), (5, 43020801), (9, 23900445), (15, 14340267), (27, 7966815), (45, 4780089), (81, 2655605), (135, 1593363), (405, 531121)]