21197312

素因数分解:

$2^9\times {\mathrm{19}}^1\times {\mathrm{2179}}^1$

素因数の和:2216

約数の個数: 40

約数和(自身を含む): 44602800

約数和(自身を除く): 23405488

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 256, 304, 512, 608, 1216, 2179, 2432, 4358, 4864, 8716, 9728, 17432, 34864, 41401, 69728, 82802, 139456, 165604, 278912, 331208, 557824, 662416, 1115648, 1324832, 2649664, 5299328, 10598656, 21197312]

約数ペア:

[(1, 21197312), (2, 10598656), (4, 5299328), (8, 2649664), (16, 1324832), (19, 1115648), (32, 662416), (38, 557824), (64, 331208), (76, 278912), (128, 165604), (152, 139456), (256, 82802), (304, 69728), (512, 41401), (608, 34864), (1216, 17432), (2179, 9728), (2432, 8716), (4358, 4864)]