20715555

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{2377}}^1$

素因数の和:2475

約数の個数: 32

約数和(自身を含む): 38352384

約数和(自身を除く): 17636829

約数列:

[1, 3, 5, 7, 15, 21, 35, 83, 105, 249, 415, 581, 1245, 1743, 2377, 2905, 7131, 8715, 11885, 16639, 35655, 49917, 83195, 197291, 249585, 591873, 986455, 1381037, 2959365, 4143111, 6905185, 20715555]

約数ペア:

[(1, 20715555), (3, 6905185), (5, 4143111), (7, 2959365), (15, 1381037), (21, 986455), (35, 591873), (83, 249585), (105, 197291), (249, 83195), (415, 49917), (581, 35655), (1245, 16639), (1743, 11885), (2377, 8715), (2905, 7131)]