215910320

素因数分解:

$2^4\times 5^1\times {\mathrm{997}}^1\times {\mathrm{2707}}^1$

素因数の和:3717

約数の個数: 40

約数和(自身を含む): 502680624

約数和(自身を除く): 286770304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 997, 1994, 2707, 3988, 4985, 5414, 7976, 9970, 10828, 13535, 15952, 19940, 21656, 27070, 39880, 43312, 54140, 79760, 108280, 216560, 2698879, 5397758, 10795516, 13494395, 21591032, 26988790, 43182064, 53977580, 107955160, 215910320]

約数ペア:

[(1, 215910320), (2, 107955160), (4, 53977580), (5, 43182064), (8, 26988790), (10, 21591032), (16, 13494395), (20, 10795516), (40, 5397758), (80, 2698879), (997, 216560), (1994, 108280), (2707, 79760), (3988, 54140), (4985, 43312), (5414, 39880), (7976, 27070), (9970, 21656), (10828, 19940), (13535, 15952)]