21921501

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{317}}^1$

素因数の和:453

約数の個数: 32

約数和(自身を含む): 34801920

約数和(自身を除く): 12880419

約数列:

[1, 3, 7, 21, 37, 89, 111, 259, 267, 317, 623, 777, 951, 1869, 2219, 3293, 6657, 9879, 11729, 23051, 28213, 35187, 69153, 82103, 84639, 197491, 246309, 592473, 1043881, 3131643, 7307167, 21921501]

約数ペア:

[(1, 21921501), (3, 7307167), (7, 3131643), (21, 1043881), (37, 592473), (89, 246309), (111, 197491), (259, 84639), (267, 82103), (317, 69153), (623, 35187), (777, 28213), (951, 23051), (1869, 11729), (2219, 9879), (3293, 6657)]