20806561635

素因数分解:

$3^1\times 5^1\times {\mathrm{419}}^1\times {\mathrm{431}}^1\times {\mathrm{7681}}^1$

素因数の和:8539

約数の個数: 32

約数和(自身を含む): 33451729920

約数和(自身を除く): 12645168285

約数列:

[1, 3, 5, 15, 419, 431, 1257, 1293, 2095, 2155, 6285, 6465, 7681, 23043, 38405, 115215, 180589, 541767, 902945, 2708835, 3218339, 3310511, 9655017, 9931533, 16091695, 16552555, 48275085, 49657665, 1387104109, 4161312327, 6935520545, 20806561635]

約数ペア:

[(1, 20806561635), (3, 6935520545), (5, 4161312327), (15, 1387104109), (419, 49657665), (431, 48275085), (1257, 16552555), (1293, 16091695), (2095, 9931533), (2155, 9655017), (6285, 3310511), (6465, 3218339), (7681, 2708835), (23043, 902945), (38405, 541767), (115215, 180589)]