809865

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{857}}^1$

素因数の和:878

約数の個数: 32

約数和(自身を含む): 1647360

約数和(自身を除く): 837495

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 857, 945, 2571, 4285, 5999, 7713, 12855, 17997, 23139, 29995, 38565, 53991, 89985, 115695, 161973, 269955, 809865]

約数ペア:

[(1, 809865), (3, 269955), (5, 161973), (7, 115695), (9, 89985), (15, 53991), (21, 38565), (27, 29995), (35, 23139), (45, 17997), (63, 12855), (105, 7713), (135, 5999), (189, 4285), (315, 2571), (857, 945)]