21175875

素因数分解:

$3^2\times 5^3\times 7^1\times {\mathrm{2689}}^1$

素因数の和:2717

約数の個数: 48

約数和(自身を含む): 43642560

約数和(自身を除く): 22466685

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 75, 105, 125, 175, 225, 315, 375, 525, 875, 1125, 1575, 2625, 2689, 7875, 8067, 13445, 18823, 24201, 40335, 56469, 67225, 94115, 121005, 169407, 201675, 282345, 336125, 470575, 605025, 847035, 1008375, 1411725, 2352875, 3025125, 4235175, 7058625, 21175875]

約数ペア:

[(1, 21175875), (3, 7058625), (5, 4235175), (7, 3025125), (9, 2352875), (15, 1411725), (21, 1008375), (25, 847035), (35, 605025), (45, 470575), (63, 336125), (75, 282345), (105, 201675), (125, 169407), (175, 121005), (225, 94115), (315, 67225), (375, 56469), (525, 40335), (875, 24201), (1125, 18823), (1575, 13445), (2625, 8067), (2689, 7875)]