21000643173

素因数分解:

$3^3\times {\mathrm{173}}^1\times {\mathrm{1619}}^1\times {\mathrm{2777}}^1$

素因数の和:4578

約数の個数: 32

約数和(自身を含む): 31322505600

約数和(自身を除く): 10321862427

約数列:

[1, 3, 9, 27, 173, 519, 1557, 1619, 2777, 4671, 4857, 8331, 14571, 24993, 43713, 74979, 280087, 480421, 840261, 1441263, 2520783, 4323789, 4495963, 7562349, 12971367, 13487889, 40463667, 121391001, 777801599, 2333404797, 7000214391, 21000643173]

約数ペア:

[(1, 21000643173), (3, 7000214391), (9, 2333404797), (27, 777801599), (173, 121391001), (519, 40463667), (1557, 13487889), (1619, 12971367), (2777, 7562349), (4671, 4495963), (4857, 4323789), (8331, 2520783), (14571, 1441263), (24993, 840261), (43713, 480421), (74979, 280087)]