1440

素因数分解:

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

素因数の和:21

約数の個数: 36

約数和(自身を含む): 4914

約数和(自身を除く): 3474

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440]

約数ペア:

[(1, 1440), (2, 720), (3, 480), (4, 360), (5, 288), (6, 240), (8, 180), (9, 160), (10, 144), (12, 120), (15, 96), (16, 90), (18, 80), (20, 72), (24, 60), (30, 48), (32, 45), (36, 40)]