40019915

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{19861}}^1$

素因数の和:19910

約数の個数: 16

約数和(自身を含む): 53389056

約数和(自身を除く): 13369141

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 19861, 99305, 258193, 615691, 1290965, 3078455, 8003983, 40019915]

約数ペア:

[(1, 40019915), (5, 8003983), (13, 3078455), (31, 1290965), (65, 615691), (155, 258193), (403, 99305), (2015, 19861)]