21691545

素因数分解:

$3^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{13267}}^1$

素因数の和:13384

約数の個数: 16

約数和(自身を含む): 35027520

約数和(自身を除く): 13335975

約数列:

[1, 3, 5, 15, 109, 327, 545, 1635, 13267, 39801, 66335, 199005, 1446103, 4338309, 7230515, 21691545]

約数ペア:

[(1, 21691545), (3, 7230515), (5, 4338309), (15, 1446103), (109, 199005), (327, 66335), (545, 39801), (1635, 13267)]