20883429

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:115

約数の個数: 72

約数和(自身を含む): 38824448

約数和(自身を除く): 17941019

約数列:

[1, 3, 7, 9, 17, 21, 31, 37, 51, 63, 93, 111, 119, 153, 217, 259, 279, 289, 333, 357, 527, 629, 651, 777, 867, 1071, 1147, 1581, 1887, 1953, 2023, 2331, 2601, 3441, 3689, 4403, 4743, 5661, 6069, 8029, 8959, 10323, 10693, 11067, 13209, 18207, 19499, 24087, 26877, 32079, 33201, 39627, 58497, 62713, 72261, 74851, 80631, 96237, 136493, 175491, 188139, 224553, 331483, 409479, 564417, 673659, 994449, 1228437, 2320381, 2983347, 6961143, 20883429]

約数ペア:

[(1, 20883429), (3, 6961143), (7, 2983347), (9, 2320381), (17, 1228437), (21, 994449), (31, 673659), (37, 564417), (51, 409479), (63, 331483), (93, 224553), (111, 188139), (119, 175491), (153, 136493), (217, 96237), (259, 80631), (279, 74851), (289, 72261), (333, 62713), (357, 58497), (527, 39627), (629, 33201), (651, 32079), (777, 26877), (867, 24087), (1071, 19499), (1147, 18207), (1581, 13209), (1887, 11067), (1953, 10693), (2023, 10323), (2331, 8959), (2601, 8029), (3441, 6069), (3689, 5661), (4403, 4743)]