16561665

素因数分解:

$3^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{317}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 30558528

約数和(自身を除く): 13996863

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 81, 129, 135, 215, 243, 317, 387, 405, 645, 951, 1161, 1215, 1585, 1935, 2853, 3483, 4755, 5805, 8559, 10449, 13631, 14265, 17415, 25677, 40893, 42795, 52245, 68155, 77031, 122679, 128385, 204465, 368037, 385155, 613395, 1104111, 1840185, 3312333, 5520555, 16561665]

約数ペア:

[(1, 16561665), (3, 5520555), (5, 3312333), (9, 1840185), (15, 1104111), (27, 613395), (43, 385155), (45, 368037), (81, 204465), (129, 128385), (135, 122679), (215, 77031), (243, 68155), (317, 52245), (387, 42795), (405, 40893), (645, 25677), (951, 17415), (1161, 14265), (1215, 13631), (1585, 10449), (1935, 8559), (2853, 5805), (3483, 4755)]