21489138

素因数分解:

$2^1\times 3^4\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{389}}^1$

素因数の和:445

約数の個数: 80

約数和(自身を含む): 54362880

約数和(自身を除く): 32873742

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 27, 31, 33, 54, 62, 66, 81, 93, 99, 162, 186, 198, 279, 297, 341, 389, 558, 594, 682, 778, 837, 891, 1023, 1167, 1674, 1782, 2046, 2334, 2511, 3069, 3501, 4279, 5022, 6138, 7002, 8558, 9207, 10503, 12059, 12837, 18414, 21006, 24118, 25674, 27621, 31509, 36177, 38511, 55242, 63018, 72354, 77022, 108531, 115533, 132649, 217062, 231066, 265298, 325593, 346599, 397947, 651186, 693198, 795894, 976779, 1193841, 1953558, 2387682, 3581523, 7163046, 10744569, 21489138]

約数ペア:

[(1, 21489138), (2, 10744569), (3, 7163046), (6, 3581523), (9, 2387682), (11, 1953558), (18, 1193841), (22, 976779), (27, 795894), (31, 693198), (33, 651186), (54, 397947), (62, 346599), (66, 325593), (81, 265298), (93, 231066), (99, 217062), (162, 132649), (186, 115533), (198, 108531), (279, 77022), (297, 72354), (341, 63018), (389, 55242), (558, 38511), (594, 36177), (682, 31509), (778, 27621), (837, 25674), (891, 24118), (1023, 21006), (1167, 18414), (1674, 12837), (1782, 12059), (2046, 10503), (2334, 9207), (2511, 8558), (3069, 7002), (3501, 6138), (4279, 5022)]