81661778

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{2251}}^1$

素因数の和:2378

約数の個数: 32

約数和(自身を含む): 143011008

約数和(自身を除く): 61349230

約数列:

[1, 2, 11, 17, 22, 34, 97, 187, 194, 374, 1067, 1649, 2134, 2251, 3298, 4502, 18139, 24761, 36278, 38267, 49522, 76534, 218347, 420937, 436694, 841874, 2401817, 3711899, 4803634, 7423798, 40830889, 81661778]

約数ペア:

[(1, 81661778), (2, 40830889), (11, 7423798), (17, 4803634), (22, 3711899), (34, 2401817), (97, 841874), (187, 436694), (194, 420937), (374, 218347), (1067, 76534), (1649, 49522), (2134, 38267), (2251, 36278), (3298, 24761), (4502, 18139)]