81970385

素因数分解:

$5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 120657600

約数和(自身を除く): 38687215

約数列:

[1, 5, 7, 29, 35, 49, 83, 139, 145, 203, 245, 415, 581, 695, 973, 1015, 1421, 2407, 2905, 4031, 4067, 4865, 6811, 7105, 11537, 12035, 16849, 20155, 20335, 28217, 34055, 57685, 80759, 84245, 117943, 141085, 197519, 334573, 403795, 565313, 589715, 987595, 1672865, 2342011, 2826565, 11710055, 16394077, 81970385]

約数ペア:

[(1, 81970385), (5, 16394077), (7, 11710055), (29, 2826565), (35, 2342011), (49, 1672865), (83, 987595), (139, 589715), (145, 565313), (203, 403795), (245, 334573), (415, 197519), (581, 141085), (695, 117943), (973, 84245), (1015, 80759), (1421, 57685), (2407, 34055), (2905, 28217), (4031, 20335), (4067, 20155), (4865, 16849), (6811, 12035), (7105, 11537)]