818505

素因数分解:

$3^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:107

約数の個数: 40

約数和(自身を含む): 1533312

約数和(自身を除く): 714807

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 47, 81, 129, 135, 141, 215, 235, 387, 405, 423, 645, 705, 1161, 1269, 1935, 2021, 2115, 3483, 3807, 5805, 6063, 6345, 10105, 17415, 18189, 19035, 30315, 54567, 90945, 163701, 272835, 818505]

約数ペア:

[(1, 818505), (3, 272835), (5, 163701), (9, 90945), (15, 54567), (27, 30315), (43, 19035), (45, 18189), (47, 17415), (81, 10105), (129, 6345), (135, 6063), (141, 5805), (215, 3807), (235, 3483), (387, 2115), (405, 2021), (423, 1935), (645, 1269), (705, 1161)]