78401920

素因数分解:

$2^7\times 5^1\times {\mathrm{122503}}^1$

素因数の和:122522

約数の個数: 32

約数和(自身を含む): 187431120

約数和(自身を除く): 109029200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 122503, 245006, 490012, 612515, 980024, 1225030, 1960048, 2450060, 3920096, 4900120, 7840192, 9800240, 15680384, 19600480, 39200960, 78401920]

約数ペア:

[(1, 78401920), (2, 39200960), (4, 19600480), (5, 15680384), (8, 9800240), (10, 7840192), (16, 4900120), (20, 3920096), (32, 2450060), (40, 1960048), (64, 1225030), (80, 980024), (128, 612515), (160, 490012), (320, 245006), (640, 122503)]