398115

素因数分解:

$3^4\times 5^1\times {\mathrm{983}}^1$

素因数の和:1000

約数の個数: 20

約数和(自身を含む): 714384

約数和(自身を除く): 316269

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 983, 2949, 4915, 8847, 14745, 26541, 44235, 79623, 132705, 398115]

約数ペア:

[(1, 398115), (3, 132705), (5, 79623), (9, 44235), (15, 26541), (27, 14745), (45, 8847), (81, 4915), (135, 2949), (405, 983)]