20001645

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{293}}^1$

素因数の和:382

約数の個数: 48

約数和(自身を含む): 36599472

約数和(自身を除く): 16597827

約数列:

[1, 3, 5, 9, 15, 37, 41, 45, 111, 123, 185, 205, 293, 333, 369, 555, 615, 879, 1465, 1517, 1665, 1845, 2637, 4395, 4551, 7585, 10841, 12013, 13185, 13653, 22755, 32523, 36039, 54205, 60065, 68265, 97569, 108117, 162615, 180195, 444481, 487845, 540585, 1333443, 2222405, 4000329, 6667215, 20001645]

約数ペア:

[(1, 20001645), (3, 6667215), (5, 4000329), (9, 2222405), (15, 1333443), (37, 540585), (41, 487845), (45, 444481), (111, 180195), (123, 162615), (185, 108117), (205, 97569), (293, 68265), (333, 60065), (369, 54205), (555, 36039), (615, 32523), (879, 22755), (1465, 13653), (1517, 13185), (1665, 12013), (1845, 10841), (2637, 7585), (4395, 4551)]