820980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{4561}}^1$

素因数の和:4576

約数の個数: 36

約数和(自身を含む): 2490852

約数和(自身を除く): 1669872

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 4561, 9122, 13683, 18244, 22805, 27366, 41049, 45610, 54732, 68415, 82098, 91220, 136830, 164196, 205245, 273660, 410490, 820980]

約数ペア:

[(1, 820980), (2, 410490), (3, 273660), (4, 205245), (5, 164196), (6, 136830), (9, 91220), (10, 82098), (12, 68415), (15, 54732), (18, 45610), (20, 41049), (30, 27366), (36, 22805), (45, 18244), (60, 13683), (90, 9122), (180, 4561)]