21950180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{1889}}^1$

素因数の和:1988

約数の個数: 48

約数和(自身を含む): 53343360

約数和(自身を除く): 31393180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 83, 140, 166, 332, 415, 581, 830, 1162, 1660, 1889, 2324, 2905, 3778, 5810, 7556, 9445, 11620, 13223, 18890, 26446, 37780, 52892, 66115, 132230, 156787, 264460, 313574, 627148, 783935, 1097509, 1567870, 2195018, 3135740, 4390036, 5487545, 10975090, 21950180]

約数ペア:

[(1, 21950180), (2, 10975090), (4, 5487545), (5, 4390036), (7, 3135740), (10, 2195018), (14, 1567870), (20, 1097509), (28, 783935), (35, 627148), (70, 313574), (83, 264460), (140, 156787), (166, 132230), (332, 66115), (415, 52892), (581, 37780), (830, 26446), (1162, 18890), (1660, 13223), (1889, 11620), (2324, 9445), (2905, 7556), (3778, 5810)]