21902511

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{251}}^1$

素因数の和:359

約数の個数: 32

約数和(自身を含む): 32659200

約数和(自身を除く): 10756689

約数列:

[1, 3, 17, 29, 51, 59, 87, 177, 251, 493, 753, 1003, 1479, 1711, 3009, 4267, 5133, 7279, 12801, 14809, 21837, 29087, 44427, 87261, 123743, 251753, 371229, 429461, 755259, 1288383, 7300837, 21902511]

約数ペア:

[(1, 21902511), (3, 7300837), (17, 1288383), (29, 755259), (51, 429461), (59, 371229), (87, 251753), (177, 123743), (251, 87261), (493, 44427), (753, 29087), (1003, 21837), (1479, 14809), (1711, 12801), (3009, 7279), (4267, 5133)]