21720884

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{3533}}^1$

素因数の和:3619

約数の個数: 24

約数和(自身を含む): 40075560

約数和(自身を除く): 18354676

約数列:

[1, 2, 4, 29, 53, 58, 106, 116, 212, 1537, 3074, 3533, 6148, 7066, 14132, 102457, 187249, 204914, 374498, 409828, 748996, 5430221, 10860442, 21720884]

約数ペア:

[(1, 21720884), (2, 10860442), (4, 5430221), (29, 748996), (53, 409828), (58, 374498), (106, 204914), (116, 187249), (212, 102457), (1537, 14132), (3074, 7066), (3533, 6148)]