78704420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^2\times {\mathrm{2341}}^1$

素因数の和:2432

約数の個数: 36

約数和(自身を含む): 169481172

約数和(自身を除く): 90776752

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 1681, 2341, 3362, 4682, 6724, 8405, 9364, 11705, 16810, 23410, 33620, 46820, 95981, 191962, 383924, 479905, 959810, 1919620, 3935221, 7870442, 15740884, 19676105, 39352210, 78704420]

約数ペア:

[(1, 78704420), (2, 39352210), (4, 19676105), (5, 15740884), (10, 7870442), (20, 3935221), (41, 1919620), (82, 959810), (164, 479905), (205, 383924), (410, 191962), (820, 95981), (1681, 46820), (2341, 33620), (3362, 23410), (4682, 16810), (6724, 11705), (8405, 9364)]