20709927

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{317}}^1$

素因数の和:408

約数の個数: 48

約数和(自身を含む): 36908352

約数和(自身を除く): 16198425

約数列:

[1, 3, 7, 9, 17, 21, 51, 61, 63, 119, 153, 183, 317, 357, 427, 549, 951, 1037, 1071, 1281, 2219, 2853, 3111, 3843, 5389, 6657, 7259, 9333, 16167, 19337, 19971, 21777, 37723, 48501, 58011, 65331, 113169, 135359, 174033, 328729, 339507, 406077, 986187, 1218231, 2301103, 2958561, 6903309, 20709927]

約数ペア:

[(1, 20709927), (3, 6903309), (7, 2958561), (9, 2301103), (17, 1218231), (21, 986187), (51, 406077), (61, 339507), (63, 328729), (119, 174033), (153, 135359), (183, 113169), (317, 65331), (357, 58011), (427, 48501), (549, 37723), (951, 21777), (1037, 19971), (1071, 19337), (1281, 16167), (2219, 9333), (2853, 7259), (3111, 6657), (3843, 5389)]