21439495

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{233}}^1\times {\mathrm{239}}^1$

素因数の和:495

約数の個数: 32

約数和(自身を含む): 32348160

約数和(自身を除く): 10908665

約数列:

[1, 5, 7, 11, 35, 55, 77, 233, 239, 385, 1165, 1195, 1631, 1673, 2563, 2629, 8155, 8365, 12815, 13145, 17941, 18403, 55687, 89705, 92015, 278435, 389809, 612557, 1949045, 3062785, 4287899, 21439495]

約数ペア:

[(1, 21439495), (5, 4287899), (7, 3062785), (11, 1949045), (35, 612557), (55, 389809), (77, 278435), (233, 92015), (239, 89705), (385, 55687), (1165, 18403), (1195, 17941), (1631, 13145), (1673, 12815), (2563, 8365), (2629, 8155)]