680336

素因数分解:

$2^4\times {\mathrm{101}}^1\times {\mathrm{421}}^1$

素因数の和:530

約数の個数: 20

約数和(自身を含む): 1334364

約数和(自身を除く): 654028

約数列:

[1, 2, 4, 8, 16, 101, 202, 404, 421, 808, 842, 1616, 1684, 3368, 6736, 42521, 85042, 170084, 340168, 680336]

約数ペア:

[(1, 680336), (2, 340168), (4, 170084), (8, 85042), (16, 42521), (101, 6736), (202, 3368), (404, 1684), (421, 1616), (808, 842)]