21938145

素因数分解:

$3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1\times {\mathrm{263}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 36191232

約数和(自身を除く): 14253087

約数列:

[1, 3, 5, 15, 67, 83, 201, 249, 263, 335, 415, 789, 1005, 1245, 1315, 3945, 5561, 16683, 17621, 21829, 27805, 52863, 65487, 83415, 88105, 109145, 264315, 327435, 1462543, 4387629, 7312715, 21938145]

約数ペア:

[(1, 21938145), (3, 7312715), (5, 4387629), (15, 1462543), (67, 327435), (83, 264315), (201, 109145), (249, 88105), (263, 83415), (335, 65487), (415, 52863), (789, 27805), (1005, 21829), (1245, 17621), (1315, 16683), (3945, 5561)]