21482237

素因数分解:

$7^2\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:126

約数の個数: 36

約数和(自身を含む): 27928404

約数和(自身を除く): 6446167

約数列:

[1, 7, 17, 37, 41, 49, 119, 259, 287, 289, 629, 697, 833, 1517, 1813, 2009, 2023, 4403, 4879, 10619, 10693, 11849, 14161, 25789, 30821, 34153, 74333, 74851, 82943, 180523, 438413, 523957, 580601, 1263661, 3068891, 21482237]

約数ペア:

[(1, 21482237), (7, 3068891), (17, 1263661), (37, 580601), (41, 523957), (49, 438413), (119, 180523), (259, 82943), (287, 74851), (289, 74333), (629, 34153), (697, 30821), (833, 25789), (1517, 14161), (1813, 11849), (2009, 10693), (2023, 10619), (4403, 4879)]