19956820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{76757}}^1$

素因数の和:76779

約数の個数: 24

約数和(自身を含む): 45133704

約数和(自身を除く): 25176884

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 76757, 153514, 307028, 383785, 767570, 997841, 1535140, 1995682, 3991364, 4989205, 9978410, 19956820]

約数ペア:

[(1, 19956820), (2, 9978410), (4, 4989205), (5, 3991364), (10, 1995682), (13, 1535140), (20, 997841), (26, 767570), (52, 383785), (65, 307028), (130, 153514), (260, 76757)]