21535065

素因数分解:

$3^4\times 5^1\times {\mathrm{53173}}^1$

素因数の和:53190

約数の個数: 20

約数和(自身を含む): 38604324

約数和(自身を除く): 17069259

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 53173, 159519, 265865, 478557, 797595, 1435671, 2392785, 4307013, 7178355, 21535065]

約数ペア:

[(1, 21535065), (3, 7178355), (5, 4307013), (9, 2392785), (15, 1435671), (27, 797595), (45, 478557), (81, 265865), (135, 159519), (405, 53173)]