161805740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{499}}^1\times {\mathrm{523}}^1$

素因数の和:1062

約数の個数: 48

約数和(自身を含む): 352128000

約数和(自身を除く): 190322260

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 499, 523, 620, 998, 1046, 1996, 2092, 2495, 2615, 4990, 5230, 9980, 10460, 15469, 16213, 30938, 32426, 61876, 64852, 77345, 81065, 154690, 162130, 260977, 309380, 324260, 521954, 1043908, 1304885, 2609770, 5219540, 8090287, 16180574, 32361148, 40451435, 80902870, 161805740]

約数ペア:

[(1, 161805740), (2, 80902870), (4, 40451435), (5, 32361148), (10, 16180574), (20, 8090287), (31, 5219540), (62, 2609770), (124, 1304885), (155, 1043908), (310, 521954), (499, 324260), (523, 309380), (620, 260977), (998, 162130), (1046, 154690), (1996, 81065), (2092, 77345), (2495, 64852), (2615, 61876), (4990, 32426), (5230, 30938), (9980, 16213), (10460, 15469)]