69378020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{419}}^1\times {\mathrm{487}}^1$

素因数の和:932

約数の個数: 48

約数和(自身を含む): 154949760

約数和(自身を除く): 85571740

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 419, 487, 838, 974, 1676, 1948, 2095, 2435, 4190, 4870, 7123, 8279, 8380, 9740, 14246, 16558, 28492, 33116, 35615, 41395, 71230, 82790, 142460, 165580, 204053, 408106, 816212, 1020265, 2040530, 3468901, 4081060, 6937802, 13875604, 17344505, 34689010, 69378020]

約数ペア:

[(1, 69378020), (2, 34689010), (4, 17344505), (5, 13875604), (10, 6937802), (17, 4081060), (20, 3468901), (34, 2040530), (68, 1020265), (85, 816212), (170, 408106), (340, 204053), (419, 165580), (487, 142460), (838, 82790), (974, 71230), (1676, 41395), (1948, 35615), (2095, 33116), (2435, 28492), (4190, 16558), (4870, 14246), (7123, 9740), (8279, 8380)]