28185140

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{16979}}^1$

素因数の和:17071

約数の個数: 24

約数和(自身を含む): 59905440

約数和(自身を除く): 31720300

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 16979, 33958, 67916, 84895, 169790, 339580, 1409257, 2818514, 5637028, 7046285, 14092570, 28185140]

約数ペア:

[(1, 28185140), (2, 14092570), (4, 7046285), (5, 5637028), (10, 2818514), (20, 1409257), (83, 339580), (166, 169790), (332, 84895), (415, 67916), (830, 33958), (1660, 16979)]