19964753405

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{181}}^1\times {\mathrm{28319}}^1$

素因数の和:28565

約数の個数: 32

約数和(自身を含む): 25977369600

約数和(自身を除く): 6012616195

約数列:

[1, 5, 19, 41, 95, 181, 205, 779, 905, 3439, 3895, 7421, 17195, 28319, 37105, 140999, 141595, 538061, 704995, 1161079, 2690305, 5125739, 5805395, 22060501, 25628695, 97389041, 110302505, 210155299, 486945205, 1050776495, 3992950681, 19964753405]

約数ペア:

[(1, 19964753405), (5, 3992950681), (19, 1050776495), (41, 486945205), (95, 210155299), (181, 110302505), (205, 97389041), (779, 25628695), (905, 22060501), (3439, 5805395), (3895, 5125739), (7421, 2690305), (17195, 1161079), (28319, 704995), (37105, 538061), (140999, 141595)]