18968992

素因数分解:

$2^5\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4457}}^1$

素因数の和:4493

約数の個数: 48

約数和(自身を含む): 44936640

約数和(自身を除く): 25967648

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 76, 112, 133, 152, 224, 266, 304, 532, 608, 1064, 2128, 4256, 4457, 8914, 17828, 31199, 35656, 62398, 71312, 84683, 124796, 142624, 169366, 249592, 338732, 499184, 592781, 677464, 998368, 1185562, 1354928, 2371124, 2709856, 4742248, 9484496, 18968992]

約数ペア:

[(1, 18968992), (2, 9484496), (4, 4742248), (7, 2709856), (8, 2371124), (14, 1354928), (16, 1185562), (19, 998368), (28, 677464), (32, 592781), (38, 499184), (56, 338732), (76, 249592), (112, 169366), (133, 142624), (152, 124796), (224, 84683), (266, 71312), (304, 62398), (532, 35656), (608, 31199), (1064, 17828), (2128, 8914), (4256, 4457)]