20712185

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{541}}^1$

素因数の和:609

約数の個数: 32

約数和(自身を含む): 29137920

約数和(自身を除く): 8425735

約数列:

[1, 5, 13, 19, 31, 65, 95, 155, 247, 403, 541, 589, 1235, 2015, 2705, 2945, 7033, 7657, 10279, 16771, 35165, 38285, 51395, 83855, 133627, 218023, 318649, 668135, 1090115, 1593245, 4142437, 20712185]

約数ペア:

[(1, 20712185), (5, 4142437), (13, 1593245), (19, 1090115), (31, 668135), (65, 318649), (95, 218023), (155, 133627), (247, 83855), (403, 51395), (541, 38285), (589, 35165), (1235, 16771), (2015, 10279), (2705, 7657), (2945, 7033)]