28380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1$

素因数の和:66

約数の個数: 48

約数和(自身を含む): 88704

約数和(自身を除く): 60324

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 43, 44, 55, 60, 66, 86, 110, 129, 132, 165, 172, 215, 220, 258, 330, 430, 473, 516, 645, 660, 860, 946, 1290, 1419, 1892, 2365, 2580, 2838, 4730, 5676, 7095, 9460, 14190, 28380]

約数ペア:

[(1, 28380), (2, 14190), (3, 9460), (4, 7095), (5, 5676), (6, 4730), (10, 2838), (11, 2580), (12, 2365), (15, 1892), (20, 1419), (22, 1290), (30, 946), (33, 860), (43, 660), (44, 645), (55, 516), (60, 473), (66, 430), (86, 330), (110, 258), (129, 220), (132, 215), (165, 172)]