21240

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{59}}^1$

素因数の和:76

約数の個数: 48

約数和(自身を含む): 70200

約数和(自身を除く): 48960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 59, 60, 72, 90, 118, 120, 177, 180, 236, 295, 354, 360, 472, 531, 590, 708, 885, 1062, 1180, 1416, 1770, 2124, 2360, 2655, 3540, 4248, 5310, 7080, 10620, 21240]

約数ペア:

[(1, 21240), (2, 10620), (3, 7080), (4, 5310), (5, 4248), (6, 3540), (8, 2655), (9, 2360), (10, 2124), (12, 1770), (15, 1416), (18, 1180), (20, 1062), (24, 885), (30, 708), (36, 590), (40, 531), (45, 472), (59, 360), (60, 354), (72, 295), (90, 236), (118, 180), (120, 177)]