20649885

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{1283}}^1$

素因数の和:1357

約数の個数: 32

約数和(自身を含む): 35130240

約数和(自身を除く): 14480355

約数列:

[1, 3, 5, 15, 29, 37, 87, 111, 145, 185, 435, 555, 1073, 1283, 3219, 3849, 5365, 6415, 16095, 19245, 37207, 47471, 111621, 142413, 186035, 237355, 558105, 712065, 1376659, 4129977, 6883295, 20649885]

約数ペア:

[(1, 20649885), (3, 6883295), (5, 4129977), (15, 1376659), (29, 712065), (37, 558105), (87, 237355), (111, 186035), (145, 142413), (185, 111621), (435, 47471), (555, 37207), (1073, 19245), (1283, 16095), (3219, 6415), (3849, 5365)]