20945120

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18701}}^1$

素因数の和:18723

約数の個数: 48

約数和(自身を含む): 56554848

約数和(自身を除く): 35609728

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18701, 37402, 74804, 93505, 130907, 149608, 187010, 261814, 299216, 374020, 523628, 598432, 654535, 748040, 1047256, 1309070, 1496080, 2094512, 2618140, 2992160, 4189024, 5236280, 10472560, 20945120]

約数ペア:

[(1, 20945120), (2, 10472560), (4, 5236280), (5, 4189024), (7, 2992160), (8, 2618140), (10, 2094512), (14, 1496080), (16, 1309070), (20, 1047256), (28, 748040), (32, 654535), (35, 598432), (40, 523628), (56, 374020), (70, 299216), (80, 261814), (112, 187010), (140, 149608), (160, 130907), (224, 93505), (280, 74804), (560, 37402), (1120, 18701)]