20178812045

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{19880603}}^1$

素因数の和:19880644

約数の個数: 16

約数和(自身を含む): 28628069760

約数和(自身を除く): 8449257715

約数列:

[1, 5, 7, 29, 35, 145, 203, 1015, 19880603, 99403015, 139164221, 576537487, 695821105, 2882687435, 4035762409, 20178812045]

約数ペア:

[(1, 20178812045), (5, 4035762409), (7, 2882687435), (29, 695821105), (35, 576537487), (145, 139164221), (203, 99403015), (1015, 19880603)]