40020125

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{509}}^1$

素因数の和:578

約数の個数: 32

約数和(自身を含む): 54419040

約数和(自身を除く): 14398915

約数列:

[1, 5, 17, 25, 37, 85, 125, 185, 425, 509, 629, 925, 2125, 2545, 3145, 4625, 8653, 12725, 15725, 18833, 43265, 63625, 78625, 94165, 216325, 320161, 470825, 1081625, 1600805, 2354125, 8004025, 40020125]

約数ペア:

[(1, 40020125), (5, 8004025), (17, 2354125), (25, 1600805), (37, 1081625), (85, 470825), (125, 320161), (185, 216325), (425, 94165), (509, 78625), (629, 63625), (925, 43265), (2125, 18833), (2545, 15725), (3145, 12725), (4625, 8653)]