21420308

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{709}}^1$

素因数の和:816

約数の個数: 48

約数和(自身を含む): 46757760

約数和(自身を除く): 25337452

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 83, 91, 166, 182, 332, 364, 581, 709, 1079, 1162, 1418, 2158, 2324, 2836, 4316, 4963, 7553, 9217, 9926, 15106, 18434, 19852, 30212, 36868, 58847, 64519, 117694, 129038, 235388, 258076, 411929, 765011, 823858, 1530022, 1647716, 3060044, 5355077, 10710154, 21420308]

約数ペア:

[(1, 21420308), (2, 10710154), (4, 5355077), (7, 3060044), (13, 1647716), (14, 1530022), (26, 823858), (28, 765011), (52, 411929), (83, 258076), (91, 235388), (166, 129038), (182, 117694), (332, 64519), (364, 58847), (581, 36868), (709, 30212), (1079, 19852), (1162, 18434), (1418, 15106), (2158, 9926), (2324, 9217), (2836, 7553), (4316, 4963)]