20299120

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2851}}^1$

素因数の和:2953

約数の個数: 40

約数和(自身を含む): 47742480

約数和(自身を除く): 27443360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 2851, 3560, 5702, 7120, 11404, 14255, 22808, 28510, 45616, 57020, 114040, 228080, 253739, 507478, 1014956, 1268695, 2029912, 2537390, 4059824, 5074780, 10149560, 20299120]

約数ペア:

[(1, 20299120), (2, 10149560), (4, 5074780), (5, 4059824), (8, 2537390), (10, 2029912), (16, 1268695), (20, 1014956), (40, 507478), (80, 253739), (89, 228080), (178, 114040), (356, 57020), (445, 45616), (712, 28510), (890, 22808), (1424, 14255), (1780, 11404), (2851, 7120), (3560, 5702)]