1990575

素因数分解:

$3^4\times 5^2\times {\mathrm{983}}^1$

素因数の和:1005

約数の個数: 30

約数和(自身を含む): 3690984

約数和(自身を除く): 1700409

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 405, 675, 983, 2025, 2949, 4915, 8847, 14745, 24575, 26541, 44235, 73725, 79623, 132705, 221175, 398115, 663525, 1990575]

約数ペア:

[(1, 1990575), (3, 663525), (5, 398115), (9, 221175), (15, 132705), (25, 79623), (27, 73725), (45, 44235), (75, 26541), (81, 24575), (135, 14745), (225, 8847), (405, 4915), (675, 2949), (983, 2025)]