28941680

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{3319}}^1$

素因数の和:3441

約数の個数: 40

約数和(自身を含む): 67927200

約数和(自身を除く): 38985520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 3319, 4360, 6638, 8720, 13276, 16595, 26552, 33190, 53104, 66380, 132760, 265520, 361771, 723542, 1447084, 1808855, 2894168, 3617710, 5788336, 7235420, 14470840, 28941680]

約数ペア:

[(1, 28941680), (2, 14470840), (4, 7235420), (5, 5788336), (8, 3617710), (10, 2894168), (16, 1808855), (20, 1447084), (40, 723542), (80, 361771), (109, 265520), (218, 132760), (436, 66380), (545, 53104), (872, 33190), (1090, 26552), (1744, 16595), (2180, 13276), (3319, 8720), (4360, 6638)]