161663140

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{260747}}^1$

素因数の和:260787

約数の個数: 24

約数和(自身を含む): 350445312

約数和(自身を除く): 188782172

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 260747, 521494, 1042988, 1303735, 2607470, 5214940, 8083157, 16166314, 32332628, 40415785, 80831570, 161663140]

約数ペア:

[(1, 161663140), (2, 80831570), (4, 40415785), (5, 32332628), (10, 16166314), (20, 8083157), (31, 5214940), (62, 2607470), (124, 1303735), (155, 1042988), (310, 521494), (620, 260747)]