19988335088

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{30470023}}^1$

素因数の和:30470072

約数の個数: 20

約数和(自身を含む): 39671971248

約数和(自身を除く): 19683636160

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 30470023, 60940046, 121880092, 243760184, 487520368, 1249270943, 2498541886, 4997083772, 9994167544, 19988335088]

約数ペア:

[(1, 19988335088), (2, 9994167544), (4, 4997083772), (8, 2498541886), (16, 1249270943), (41, 487520368), (82, 243760184), (164, 121880092), (328, 60940046), (656, 30470023)]