19782225

素因数分解:

$3^4\times 5^2\times {\mathrm{9769}}^1$

素因数の和:9791

約数の個数: 30

約数和(自身を含む): 36647270

約数和(自身を除く): 16865045

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 405, 675, 2025, 9769, 29307, 48845, 87921, 146535, 244225, 263763, 439605, 732675, 791289, 1318815, 2198025, 3956445, 6594075, 19782225]

約数ペア:

[(1, 19782225), (3, 6594075), (5, 3956445), (9, 2198025), (15, 1318815), (25, 791289), (27, 732675), (45, 439605), (75, 263763), (81, 244225), (135, 146535), (225, 87921), (405, 48845), (675, 29307), (2025, 9769)]