18589905

素因数分解:

$3^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{233}}^1$

素因数の和:447

約数の個数: 40

約数和(自身を含む): 33637032

約数和(自身を除く): 15047127

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 197, 233, 405, 591, 699, 985, 1165, 1773, 2097, 2955, 3495, 5319, 6291, 8865, 10485, 15957, 18873, 26595, 31455, 45901, 79785, 94365, 137703, 229505, 413109, 688515, 1239327, 2065545, 3717981, 6196635, 18589905]

約数ペア:

[(1, 18589905), (3, 6196635), (5, 3717981), (9, 2065545), (15, 1239327), (27, 688515), (45, 413109), (81, 229505), (135, 137703), (197, 94365), (233, 79785), (405, 45901), (591, 31455), (699, 26595), (985, 18873), (1165, 15957), (1773, 10485), (2097, 8865), (2955, 6291), (3495, 5319)]