638551496

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{2657}}^1\times {\mathrm{2731}}^1$

素因数の和:5405

約数の個数: 32

約数和(自身を含む): 1307098080

約数和(自身を除く): 668546584

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 2657, 2731, 5314, 5462, 10628, 10924, 21256, 21848, 29227, 30041, 58454, 60082, 116908, 120164, 233816, 240328, 7256267, 14512534, 29025068, 58050136, 79818937, 159637874, 319275748, 638551496]

約数ペア:

[(1, 638551496), (2, 319275748), (4, 159637874), (8, 79818937), (11, 58050136), (22, 29025068), (44, 14512534), (88, 7256267), (2657, 240328), (2731, 233816), (5314, 120164), (5462, 116908), (10628, 60082), (10924, 58454), (21256, 30041), (21848, 29227)]