128522740

素因数分解:

$2^2\times 5^1\times {\mathrm{349}}^1\times {\mathrm{18413}}^1$

素因数の和:18771

約数の個数: 24

約数和(自身を含む): 270685800

約数和(自身を除く): 142163060

約数列:

[1, 2, 4, 5, 10, 20, 349, 698, 1396, 1745, 3490, 6980, 18413, 36826, 73652, 92065, 184130, 368260, 6426137, 12852274, 25704548, 32130685, 64261370, 128522740]

約数ペア:

[(1, 128522740), (2, 64261370), (4, 32130685), (5, 25704548), (10, 12852274), (20, 6426137), (349, 368260), (698, 184130), (1396, 92065), (1745, 73652), (3490, 36826), (6980, 18413)]