19387641

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1511}}^1$

素因数の和:1581

約数の個数: 32

約数和(自身を含む): 32514048

約数和(自身を除く): 13126407

約数列:

[1, 3, 7, 13, 21, 39, 47, 91, 141, 273, 329, 611, 987, 1511, 1833, 4277, 4533, 10577, 12831, 19643, 31731, 58929, 71017, 137501, 213051, 412503, 497119, 923221, 1491357, 2769663, 6462547, 19387641]

約数ペア:

[(1, 19387641), (3, 6462547), (7, 2769663), (13, 1491357), (21, 923221), (39, 497119), (47, 412503), (91, 213051), (141, 137501), (273, 71017), (329, 58929), (611, 31731), (987, 19643), (1511, 12831), (1833, 10577), (4277, 4533)]