21422193

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{409}}^1$

素因数の和:521

約数の個数: 32

約数和(自身を含む): 33062400

約数和(自身を除く): 11640207

約数列:

[1, 3, 13, 17, 39, 51, 79, 221, 237, 409, 663, 1027, 1227, 1343, 3081, 4029, 5317, 6953, 15951, 17459, 20859, 32311, 52377, 90389, 96933, 271167, 420043, 549287, 1260129, 1647861, 7140731, 21422193]

約数ペア:

[(1, 21422193), (3, 7140731), (13, 1647861), (17, 1260129), (39, 549287), (51, 420043), (79, 271167), (221, 96933), (237, 90389), (409, 52377), (663, 32311), (1027, 20859), (1227, 17459), (1343, 15951), (3081, 6953), (4029, 5317)]