20541645

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 17197875

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 89, 115, 207, 223, 267, 345, 445, 669, 801, 1035, 1115, 1335, 2007, 2047, 3345, 4005, 5129, 6141, 10035, 10235, 15387, 18423, 19847, 25645, 30705, 46161, 59541, 76935, 92115, 99235, 178623, 230805, 297705, 456481, 893115, 1369443, 2282405, 4108329, 6847215, 20541645]

約数ペア:

[(1, 20541645), (3, 6847215), (5, 4108329), (9, 2282405), (15, 1369443), (23, 893115), (45, 456481), (69, 297705), (89, 230805), (115, 178623), (207, 99235), (223, 92115), (267, 76935), (345, 59541), (445, 46161), (669, 30705), (801, 25645), (1035, 19847), (1115, 18423), (1335, 15387), (2007, 10235), (2047, 10035), (3345, 6141), (4005, 5129)]