28042911

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{613}}^1$

素因数の和:672

約数の個数: 48

約数和(自身を含む): 48275136

約数和(自身を除く): 20232225

約数列:

[1, 3, 9, 13, 17, 23, 39, 51, 69, 117, 153, 207, 221, 299, 391, 613, 663, 897, 1173, 1839, 1989, 2691, 3519, 5083, 5517, 7969, 10421, 14099, 15249, 23907, 31263, 42297, 45747, 71721, 93789, 126891, 135473, 183287, 239683, 406419, 549861, 719049, 1219257, 1649583, 2157147, 3115879, 9347637, 28042911]

約数ペア:

[(1, 28042911), (3, 9347637), (9, 3115879), (13, 2157147), (17, 1649583), (23, 1219257), (39, 719049), (51, 549861), (69, 406419), (117, 239683), (153, 183287), (207, 135473), (221, 126891), (299, 93789), (391, 71721), (613, 45747), (663, 42297), (897, 31263), (1173, 23907), (1839, 15249), (1989, 14099), (2691, 10421), (3519, 7969), (5083, 5517)]