18740720

素因数分解:

$2^4\times 5^1\times {\mathrm{234259}}^1$

素因数の和:234272

約数の個数: 20

約数和(自身を含む): 43572360

約数和(自身を除く): 24831640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 234259, 468518, 937036, 1171295, 1874072, 2342590, 3748144, 4685180, 9370360, 18740720]

約数ペア:

[(1, 18740720), (2, 9370360), (4, 4685180), (5, 3748144), (8, 2342590), (10, 1874072), (16, 1171295), (20, 937036), (40, 468518), (80, 234259)]