18331515

素因数分解:

$3^4\times 5^1\times {\mathrm{45263}}^1$

素因数の和:45280

約数の個数: 20

約数和(自身を含む): 32861664

約数和(自身を除く): 14530149

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 45263, 135789, 226315, 407367, 678945, 1222101, 2036835, 3666303, 6110505, 18331515]

約数ペア:

[(1, 18331515), (3, 6110505), (5, 3666303), (9, 2036835), (15, 1222101), (27, 678945), (45, 407367), (81, 226315), (135, 135789), (405, 45263)]