20155797

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{349}}^1$

素因数の和:415

約数の個数: 40

約数和(自身を含む): 32524800

約数和(自身を除く): 12369003

約数列:

[1, 3, 9, 23, 27, 31, 69, 81, 93, 207, 279, 349, 621, 713, 837, 1047, 1863, 2139, 2511, 3141, 6417, 8027, 9423, 10819, 19251, 24081, 28269, 32457, 57753, 72243, 97371, 216729, 248837, 292113, 650187, 746511, 876339, 2239533, 6718599, 20155797]

約数ペア:

[(1, 20155797), (3, 6718599), (9, 2239533), (23, 876339), (27, 746511), (31, 650187), (69, 292113), (81, 248837), (93, 216729), (207, 97371), (279, 72243), (349, 57753), (621, 32457), (713, 28269), (837, 24081), (1047, 19251), (1863, 10819), (2139, 9423), (2511, 8027), (3141, 6417)]