20357778

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{263}}^1$

素因数の和:391

約数の個数: 64

約数和(自身を含む): 49674240

約数和(自身を除く): 29316462

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 97, 114, 133, 194, 263, 266, 291, 399, 526, 582, 679, 789, 798, 1358, 1578, 1841, 1843, 2037, 3682, 3686, 4074, 4997, 5523, 5529, 9994, 11046, 11058, 12901, 14991, 25511, 25802, 29982, 34979, 38703, 51022, 69958, 76533, 77406, 104937, 153066, 178577, 209874, 357154, 484709, 535731, 969418, 1071462, 1454127, 2908254, 3392963, 6785926, 10178889, 20357778]

約数ペア:

[(1, 20357778), (2, 10178889), (3, 6785926), (6, 3392963), (7, 2908254), (14, 1454127), (19, 1071462), (21, 969418), (38, 535731), (42, 484709), (57, 357154), (97, 209874), (114, 178577), (133, 153066), (194, 104937), (263, 77406), (266, 76533), (291, 69958), (399, 51022), (526, 38703), (582, 34979), (679, 29982), (789, 25802), (798, 25511), (1358, 14991), (1578, 12901), (1841, 11058), (1843, 11046), (2037, 9994), (3682, 5529), (3686, 5523), (4074, 4997)]