21499084

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:226

約数の個数: 48

約数和(自身を含む): 41622336

約数和(自身を除く): 20123252

約数列:

[1, 2, 4, 17, 34, 61, 68, 71, 73, 122, 142, 146, 244, 284, 292, 1037, 1207, 1241, 2074, 2414, 2482, 4148, 4331, 4453, 4828, 4964, 5183, 8662, 8906, 10366, 17324, 17812, 20732, 73627, 75701, 88111, 147254, 151402, 176222, 294508, 302804, 316163, 352444, 632326, 1264652, 5374771, 10749542, 21499084]

約数ペア:

[(1, 21499084), (2, 10749542), (4, 5374771), (17, 1264652), (34, 632326), (61, 352444), (68, 316163), (71, 302804), (73, 294508), (122, 176222), (142, 151402), (146, 147254), (244, 88111), (284, 75701), (292, 73627), (1037, 20732), (1207, 17812), (1241, 17324), (2074, 10366), (2414, 8906), (2482, 8662), (4148, 5183), (4331, 4964), (4453, 4828)]