1391985

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{491}}^1$

素因数の和:515

約数の個数: 40

約数和(自身を含む): 2857536

約数和(自身を除く): 1465551

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 491, 567, 945, 1473, 2455, 2835, 3437, 4419, 7365, 10311, 13257, 17185, 22095, 30933, 39771, 51555, 66285, 92799, 154665, 198855, 278397, 463995, 1391985]

約数ペア:

[(1, 1391985), (3, 463995), (5, 278397), (7, 198855), (9, 154665), (15, 92799), (21, 66285), (27, 51555), (35, 39771), (45, 30933), (63, 22095), (81, 17185), (105, 13257), (135, 10311), (189, 7365), (315, 4419), (405, 3437), (491, 2835), (567, 2455), (945, 1473)]