221217340

素因数分解:

$2^2\times 5^1\times {\mathrm{1721}}^1\times {\mathrm{6427}}^1$

素因数の和:8157

約数の個数: 24

約数和(自身を含む): 464898672

約数和(自身を除く): 243681332

約数列:

[1, 2, 4, 5, 10, 20, 1721, 3442, 6427, 6884, 8605, 12854, 17210, 25708, 32135, 34420, 64270, 128540, 11060867, 22121734, 44243468, 55304335, 110608670, 221217340]

約数ペア:

[(1, 221217340), (2, 110608670), (4, 55304335), (5, 44243468), (10, 22121734), (20, 11060867), (1721, 128540), (3442, 64270), (6427, 34420), (6884, 32135), (8605, 25708), (12854, 17210)]