21347393

素因数分解:

${\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:161

約数の個数: 32

約数和(自身を含む): 25660800

約数和(自身を除く): 4313407

約数列:

[1, 17, 19, 29, 43, 53, 323, 493, 551, 731, 817, 901, 1007, 1247, 1537, 2279, 9367, 13889, 17119, 21199, 23693, 26129, 29203, 38743, 43301, 66091, 402781, 496451, 736117, 1123547, 1255729, 21347393]

約数ペア:

[(1, 21347393), (17, 1255729), (19, 1123547), (29, 736117), (43, 496451), (53, 402781), (323, 66091), (493, 43301), (551, 38743), (731, 29203), (817, 26129), (901, 23693), (1007, 21199), (1247, 17119), (1537, 13889), (2279, 9367)]