221465349

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{26431}}^1$

素因数の和:26470

約数の個数: 36

約数和(自身を含む): 391722240

約数和(自身を除く): 170256891

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 133, 147, 171, 399, 441, 931, 1197, 2793, 8379, 26431, 79293, 185017, 237879, 502189, 555051, 1295119, 1506567, 1665153, 3515323, 3885357, 4519701, 10545969, 11656071, 24607261, 31637907, 73821783, 221465349]

約数ペア:

[(1, 221465349), (3, 73821783), (7, 31637907), (9, 24607261), (19, 11656071), (21, 10545969), (49, 4519701), (57, 3885357), (63, 3515323), (133, 1665153), (147, 1506567), (171, 1295119), (399, 555051), (441, 502189), (931, 237879), (1197, 185017), (2793, 79293), (8379, 26431)]