891231715

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{41443}}^1$

素因数の和:41499

約数の個数: 32

約数和(自身を含む): 1289074176

約数和(自身を除く): 397842461

約数列:

[1, 5, 11, 17, 23, 55, 85, 115, 187, 253, 391, 935, 1265, 1955, 4301, 21505, 41443, 207215, 455873, 704531, 953189, 2279365, 3522655, 4765945, 7749841, 10485079, 16204213, 38749205, 52425395, 81021065, 178246343, 891231715]

約数ペア:

[(1, 891231715), (5, 178246343), (11, 81021065), (17, 52425395), (23, 38749205), (55, 16204213), (85, 10485079), (115, 7749841), (187, 4765945), (253, 3522655), (391, 2279365), (935, 953189), (1265, 704531), (1955, 455873), (4301, 207215), (21505, 41443)]