18791375

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:308

約数の個数: 32

約数和(自身を含む): 25608960

約数和(自身を除く): 6817585

約数列:

[1, 5, 17, 25, 37, 85, 125, 185, 239, 425, 629, 925, 1195, 2125, 3145, 4063, 4625, 5975, 8843, 15725, 20315, 29875, 44215, 78625, 101575, 150331, 221075, 507875, 751655, 1105375, 3758275, 18791375]

約数ペア:

[(1, 18791375), (5, 3758275), (17, 1105375), (25, 751655), (37, 507875), (85, 221075), (125, 150331), (185, 101575), (239, 78625), (425, 44215), (629, 29875), (925, 20315), (1195, 15725), (2125, 8843), (3145, 5975), (4063, 4625)]