19810375

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{167}}^1$

素因数の和:268

約数の個数: 32

約数和(自身を含む): 27151488

約数和(自身を除く): 7341113

約数列:

[1, 5, 13, 25, 65, 73, 125, 167, 325, 365, 835, 949, 1625, 1825, 2171, 4175, 4745, 9125, 10855, 12191, 20875, 23725, 54275, 60955, 118625, 158483, 271375, 304775, 792415, 1523875, 3962075, 19810375]

約数ペア:

[(1, 19810375), (5, 3962075), (13, 1523875), (25, 792415), (65, 304775), (73, 271375), (125, 158483), (167, 118625), (325, 60955), (365, 54275), (835, 23725), (949, 20875), (1625, 12191), (1825, 10855), (2171, 9125), (4175, 4745)]