20550231

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{229}}^1$

素因数の和:320

約数の個数: 36

約数和(自身を含む): 32830200

約数和(自身を除く): 12279969

約数列:

[1, 3, 9, 13, 39, 59, 117, 169, 177, 229, 507, 531, 687, 767, 1521, 2061, 2301, 2977, 6903, 8931, 9971, 13511, 26793, 29913, 38701, 40533, 89739, 116103, 121599, 175643, 348309, 526929, 1580787, 2283359, 6850077, 20550231]

約数ペア:

[(1, 20550231), (3, 6850077), (9, 2283359), (13, 1580787), (39, 526929), (59, 348309), (117, 175643), (169, 121599), (177, 116103), (229, 89739), (507, 40533), (531, 38701), (687, 29913), (767, 26793), (1521, 13511), (2061, 9971), (2301, 8931), (2977, 6903)]