161801020

素因数分解:

$2^2\times 5^1\times {\mathrm{631}}^1\times {\mathrm{12821}}^1$

素因数の和:13461

約数の個数: 24

約数和(自身を含む): 340347168

約数和(自身を除く): 178546148

約数列:

[1, 2, 4, 5, 10, 20, 631, 1262, 2524, 3155, 6310, 12620, 12821, 25642, 51284, 64105, 128210, 256420, 8090051, 16180102, 32360204, 40450255, 80900510, 161801020]

約数ペア:

[(1, 161801020), (2, 80900510), (4, 40450255), (5, 32360204), (10, 16180102), (20, 8090051), (631, 256420), (1262, 128210), (2524, 64105), (3155, 51284), (6310, 25642), (12620, 12821)]