21868125

素因数分解:

$3^1\times 5^4\times {\mathrm{107}}^1\times {\mathrm{109}}^1$

素因数の和:239

約数の個数: 40

約数和(自身を含む): 37113120

約数和(自身を除く): 15244995

約数列:

[1, 3, 5, 15, 25, 75, 107, 109, 125, 321, 327, 375, 535, 545, 625, 1605, 1635, 1875, 2675, 2725, 8025, 8175, 11663, 13375, 13625, 34989, 40125, 40875, 58315, 66875, 68125, 174945, 200625, 204375, 291575, 874725, 1457875, 4373625, 7289375, 21868125]

約数ペア:

[(1, 21868125), (3, 7289375), (5, 4373625), (15, 1457875), (25, 874725), (75, 291575), (107, 204375), (109, 200625), (125, 174945), (321, 68125), (327, 66875), (375, 58315), (535, 40875), (545, 40125), (625, 34989), (1605, 13625), (1635, 13375), (1875, 11663), (2675, 8175), (2725, 8025)]