201921291

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{839}}^1$

素因数の和:897

約数の個数: 72

約数和(自身を含む): 365994720

約数和(自身を除く): 164073429

約数列:

[1, 3, 9, 11, 13, 17, 33, 39, 51, 99, 117, 121, 143, 153, 187, 221, 363, 429, 561, 663, 839, 1089, 1287, 1573, 1683, 1989, 2057, 2431, 2517, 4719, 6171, 7293, 7551, 9229, 10907, 14157, 14263, 18513, 21879, 26741, 27687, 32721, 42789, 80223, 83061, 98163, 101519, 119977, 128367, 156893, 185419, 240669, 304557, 359931, 470679, 556257, 913671, 1079793, 1319747, 1412037, 1668771, 1725823, 2039609, 3959241, 5177469, 6118827, 11877723, 15532407, 18356481, 22435699, 67307097, 201921291]

約数ペア:

[(1, 201921291), (3, 67307097), (9, 22435699), (11, 18356481), (13, 15532407), (17, 11877723), (33, 6118827), (39, 5177469), (51, 3959241), (99, 2039609), (117, 1725823), (121, 1668771), (143, 1412037), (153, 1319747), (187, 1079793), (221, 913671), (363, 556257), (429, 470679), (561, 359931), (663, 304557), (839, 240669), (1089, 185419), (1287, 156893), (1573, 128367), (1683, 119977), (1989, 101519), (2057, 98163), (2431, 83061), (2517, 80223), (4719, 42789), (6171, 32721), (7293, 27687), (7551, 26741), (9229, 21879), (10907, 18513), (14157, 14263)]