309999728

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{450581}}^1$

素因数の和:450632

約数の個数: 20

約数和(自身を含む): 614593848

約数和(自身を除く): 304594120

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 450581, 901162, 1802324, 3604648, 7209296, 19374983, 38749966, 77499932, 154999864, 309999728]

約数ペア:

[(1, 309999728), (2, 154999864), (4, 77499932), (8, 38749966), (16, 19374983), (43, 7209296), (86, 3604648), (172, 1802324), (344, 901162), (688, 450581)]