7988920

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:208

約数の個数: 64

約数和(自身を含む): 19051200

約数和(自身を除く): 11062280

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 71, 97, 116, 142, 145, 194, 232, 284, 290, 355, 388, 485, 568, 580, 710, 776, 970, 1160, 1420, 1940, 2059, 2813, 2840, 3880, 4118, 5626, 6887, 8236, 10295, 11252, 13774, 14065, 16472, 20590, 22504, 27548, 28130, 34435, 41180, 55096, 56260, 68870, 82360, 112520, 137740, 199723, 275480, 399446, 798892, 998615, 1597784, 1997230, 3994460, 7988920]

約数ペア:

[(1, 7988920), (2, 3994460), (4, 1997230), (5, 1597784), (8, 998615), (10, 798892), (20, 399446), (29, 275480), (40, 199723), (58, 137740), (71, 112520), (97, 82360), (116, 68870), (142, 56260), (145, 55096), (194, 41180), (232, 34435), (284, 28130), (290, 27548), (355, 22504), (388, 20590), (485, 16472), (568, 14065), (580, 13774), (710, 11252), (776, 10295), (970, 8236), (1160, 6887), (1420, 5626), (1940, 4118), (2059, 3880), (2813, 2840)]