19947976

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{997}}^1$

素因数の和:1105

約数の個数: 32

約数和(自身を含む): 38981880

約数和(自身を除く): 19033904

約数列:

[1, 2, 4, 8, 41, 61, 82, 122, 164, 244, 328, 488, 997, 1994, 2501, 3988, 5002, 7976, 10004, 20008, 40877, 60817, 81754, 121634, 163508, 243268, 327016, 486536, 2493497, 4986994, 9973988, 19947976]

約数ペア:

[(1, 19947976), (2, 9973988), (4, 4986994), (8, 2493497), (41, 486536), (61, 327016), (82, 243268), (122, 163508), (164, 121634), (244, 81754), (328, 60817), (488, 40877), (997, 20008), (1994, 10004), (2501, 7976), (3988, 5002)]