19899992

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{317}}^1$

素因数の和:408

約数の個数: 64

約数和(自身を含む): 45792000

約数和(自身を除く): 25892008

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 59, 76, 118, 133, 152, 236, 266, 317, 413, 472, 532, 634, 826, 1064, 1121, 1268, 1652, 2219, 2242, 2536, 3304, 4438, 4484, 6023, 7847, 8876, 8968, 12046, 15694, 17752, 18703, 24092, 31388, 37406, 42161, 48184, 62776, 74812, 84322, 130921, 149624, 168644, 261842, 337288, 355357, 523684, 710714, 1047368, 1421428, 2487499, 2842856, 4974998, 9949996, 19899992]

約数ペア:

[(1, 19899992), (2, 9949996), (4, 4974998), (7, 2842856), (8, 2487499), (14, 1421428), (19, 1047368), (28, 710714), (38, 523684), (56, 355357), (59, 337288), (76, 261842), (118, 168644), (133, 149624), (152, 130921), (236, 84322), (266, 74812), (317, 62776), (413, 48184), (472, 42161), (532, 37406), (634, 31388), (826, 24092), (1064, 18703), (1121, 17752), (1268, 15694), (1652, 12046), (2219, 8968), (2242, 8876), (2536, 7847), (3304, 6023), (4438, 4484)]