21475120

素因数分解:

$2^4\times 5^1\times {\mathrm{268439}}^1$

素因数の和:268452

約数の個数: 20

約数和(自身を含む): 49929840

約数和(自身を除く): 28454720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 268439, 536878, 1073756, 1342195, 2147512, 2684390, 4295024, 5368780, 10737560, 21475120]

約数ペア:

[(1, 21475120), (2, 10737560), (4, 5368780), (5, 4295024), (8, 2684390), (10, 2147512), (16, 1342195), (20, 1073756), (40, 536878), (80, 268439)]