81109880

素因数分解:

$2^3\times 5^1\times {\mathrm{2027747}}^1$

素因数の和:2027758

約数の個数: 16

約数和(自身を含む): 182497320

約数和(自身を除く): 101387440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2027747, 4055494, 8110988, 10138735, 16221976, 20277470, 40554940, 81109880]

約数ペア:

[(1, 81109880), (2, 40554940), (4, 20277470), (5, 16221976), (8, 10138735), (10, 8110988), (20, 4055494), (40, 2027747)]