156321920

素因数分解:

$2^7\times 5^1\times {\mathrm{244253}}^1$

素因数の和:244272

約数の個数: 32

約数和(自身を含む): 373708620

約数和(自身を除く): 217386700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 244253, 488506, 977012, 1221265, 1954024, 2442530, 3908048, 4885060, 7816096, 9770120, 15632192, 19540240, 31264384, 39080480, 78160960, 156321920]

約数ペア:

[(1, 156321920), (2, 78160960), (4, 39080480), (5, 31264384), (8, 19540240), (10, 15632192), (16, 9770120), (20, 7816096), (32, 4885060), (40, 3908048), (64, 2442530), (80, 1954024), (128, 1221265), (160, 977012), (320, 488506), (640, 244253)]