19809980

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{9257}}^1$

素因数の和:9373

約数の個数: 24

約数和(自身を含む): 41994288

約数和(自身を除く): 22184308

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140, 9257, 18514, 37028, 46285, 92570, 185140, 990499, 1980998, 3961996, 4952495, 9904990, 19809980]

約数ペア:

[(1, 19809980), (2, 9904990), (4, 4952495), (5, 3961996), (10, 1980998), (20, 990499), (107, 185140), (214, 92570), (428, 46285), (535, 37028), (1070, 18514), (2140, 9257)]