21378352

素因数分解:

$2^4\times {\mathrm{1013}}^1\times {\mathrm{1319}}^1$

素因数の和:2340

約数の個数: 20

約数和(自身を含む): 41492880

約数和(自身を除く): 20114528

約数列:

[1, 2, 4, 8, 16, 1013, 1319, 2026, 2638, 4052, 5276, 8104, 10552, 16208, 21104, 1336147, 2672294, 5344588, 10689176, 21378352]

約数ペア:

[(1, 21378352), (2, 10689176), (4, 5344588), (8, 2672294), (16, 1336147), (1013, 21104), (1319, 16208), (2026, 10552), (2638, 8104), (4052, 5276)]