8820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2$

素因数の和:29

約数の個数: 54

約数和(自身を含む): 31122

約数和(自身を除く): 22302

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2205, 2940, 4410, 8820]

約数ペア:

[(1, 8820), (2, 4410), (3, 2940), (4, 2205), (5, 1764), (6, 1470), (7, 1260), (9, 980), (10, 882), (12, 735), (14, 630), (15, 588), (18, 490), (20, 441), (21, 420), (28, 315), (30, 294), (35, 252), (36, 245), (42, 210), (45, 196), (49, 180), (60, 147), (63, 140), (70, 126), (84, 105), (90, 98)]