21195375

素因数分解:

$3^1\times 5^3\times {\mathrm{29}}^1\times {\mathrm{1949}}^1$

素因数の和:1996

約数の個数: 32

約数和(自身を含む): 36504000

約数和(自身を除く): 15308625

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 125, 145, 375, 435, 725, 1949, 2175, 3625, 5847, 9745, 10875, 29235, 48725, 56521, 146175, 169563, 243625, 282605, 730875, 847815, 1413025, 4239075, 7065125, 21195375]

約数ペア:

[(1, 21195375), (3, 7065125), (5, 4239075), (15, 1413025), (25, 847815), (29, 730875), (75, 282605), (87, 243625), (125, 169563), (145, 146175), (375, 56521), (435, 48725), (725, 29235), (1949, 10875), (2175, 9745), (3625, 5847)]