21989403

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{5591}}^1$

素因数の和:5639

約数の個数: 24

約数和(自身を含む): 34894080

約数和(自身を除く): 12904677

約数列:

[1, 3, 9, 19, 23, 57, 69, 171, 207, 437, 1311, 3933, 5591, 16773, 50319, 106229, 128593, 318687, 385779, 956061, 1157337, 2443267, 7329801, 21989403]

約数ペア:

[(1, 21989403), (3, 7329801), (9, 2443267), (19, 1157337), (23, 956061), (57, 385779), (69, 318687), (171, 128593), (207, 106229), (437, 50319), (1311, 16773), (3933, 5591)]