19989212

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{61}}^2\times {\mathrm{79}}^1$

素因数の和:222

約数の個数: 36

約数和(自身を含む): 38132640

約数和(自身を除く): 18143428

約数列:

[1, 2, 4, 17, 34, 61, 68, 79, 122, 158, 244, 316, 1037, 1343, 2074, 2686, 3721, 4148, 4819, 5372, 7442, 9638, 14884, 19276, 63257, 81923, 126514, 163846, 253028, 293959, 327692, 587918, 1175836, 4997303, 9994606, 19989212]

約数ペア:

[(1, 19989212), (2, 9994606), (4, 4997303), (17, 1175836), (34, 587918), (61, 327692), (68, 293959), (79, 253028), (122, 163846), (158, 126514), (244, 81923), (316, 63257), (1037, 19276), (1343, 14884), (2074, 9638), (2686, 7442), (3721, 5372), (4148, 4819)]