21085245

素因数分解:

$3^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{499}}^1$

素因数の和:826

約数の個数: 32

約数和(自身を含む): 37680000

約数和(自身を除く): 16594755

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 313, 499, 939, 1497, 1565, 2495, 2817, 4491, 4695, 7485, 8451, 13473, 14085, 22455, 42255, 67365, 156187, 468561, 780935, 1405683, 2342805, 4217049, 7028415, 21085245]

約数ペア:

[(1, 21085245), (3, 7028415), (5, 4217049), (9, 2342805), (15, 1405683), (27, 780935), (45, 468561), (135, 156187), (313, 67365), (499, 42255), (939, 22455), (1497, 14085), (1565, 13473), (2495, 8451), (2817, 7485), (4491, 4695)]