20928258

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5261}}^1$

素因数の和:5299

約数の個数: 48

約数和(自身を含む): 51714936

約数和(自身を除く): 30786678

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 34, 39, 51, 78, 102, 117, 153, 221, 234, 306, 442, 663, 1326, 1989, 3978, 5261, 10522, 15783, 31566, 47349, 68393, 89437, 94698, 136786, 178874, 205179, 268311, 410358, 536622, 615537, 804933, 1162681, 1231074, 1609866, 2325362, 3488043, 6976086, 10464129, 20928258]

約数ペア:

[(1, 20928258), (2, 10464129), (3, 6976086), (6, 3488043), (9, 2325362), (13, 1609866), (17, 1231074), (18, 1162681), (26, 804933), (34, 615537), (39, 536622), (51, 410358), (78, 268311), (102, 205179), (117, 178874), (153, 136786), (221, 94698), (234, 89437), (306, 68393), (442, 47349), (663, 31566), (1326, 15783), (1989, 10522), (3978, 5261)]