20938203

素因数分解:

$3^3\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1$

素因数の和:90

約数の個数: 96

約数和(自身を含む): 40219200

約数和(自身を除く): 19280997

約数列:

[1, 3, 9, 11, 13, 17, 27, 29, 33, 39, 51, 87, 99, 117, 121, 143, 153, 187, 221, 261, 297, 319, 351, 363, 377, 429, 459, 493, 561, 663, 783, 957, 1089, 1131, 1287, 1479, 1573, 1683, 1989, 2057, 2431, 2871, 3267, 3393, 3509, 3861, 4147, 4437, 4719, 5049, 5423, 5967, 6171, 6409, 7293, 8613, 10179, 10527, 12441, 13311, 14157, 16269, 18513, 19227, 21879, 26741, 31581, 37323, 42471, 45617, 48807, 55539, 57681, 59653, 65637, 70499, 80223, 94743, 111969, 136851, 146421, 173043, 178959, 211497, 240669, 410553, 536877, 634491, 722007, 775489, 1231659, 1610631, 1903473, 2326467, 6979401, 20938203]

約数ペア:

[(1, 20938203), (3, 6979401), (9, 2326467), (11, 1903473), (13, 1610631), (17, 1231659), (27, 775489), (29, 722007), (33, 634491), (39, 536877), (51, 410553), (87, 240669), (99, 211497), (117, 178959), (121, 173043), (143, 146421), (153, 136851), (187, 111969), (221, 94743), (261, 80223), (297, 70499), (319, 65637), (351, 59653), (363, 57681), (377, 55539), (429, 48807), (459, 45617), (493, 42471), (561, 37323), (663, 31581), (783, 26741), (957, 21879), (1089, 19227), (1131, 18513), (1287, 16269), (1479, 14157), (1573, 13311), (1683, 12441), (1989, 10527), (2057, 10179), (2431, 8613), (2871, 7293), (3267, 6409), (3393, 6171), (3509, 5967), (3861, 5423), (4147, 5049), (4437, 4719)]