19993455

素因数分解:

$3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 36088416

約数和(自身を除く): 16094961

約数列:

[1, 3, 5, 9, 15, 45, 53, 83, 101, 159, 249, 265, 303, 415, 477, 505, 747, 795, 909, 1245, 1515, 2385, 3735, 4399, 4545, 5353, 8383, 13197, 16059, 21995, 25149, 26765, 39591, 41915, 48177, 65985, 75447, 80295, 125745, 197955, 240885, 377235, 444299, 1332897, 2221495, 3998691, 6664485, 19993455]

約数ペア:

[(1, 19993455), (3, 6664485), (5, 3998691), (9, 2221495), (15, 1332897), (45, 444299), (53, 377235), (83, 240885), (101, 197955), (159, 125745), (249, 80295), (265, 75447), (303, 65985), (415, 48177), (477, 41915), (505, 39591), (747, 26765), (795, 25149), (909, 21995), (1245, 16059), (1515, 13197), (2385, 8383), (3735, 5353), (4399, 4545)]