20991720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{174931}}^1$

素因数の和:174945

約数の個数: 32

約数和(自身を含む): 62975520

約数和(自身を除く): 41983800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 174931, 349862, 524793, 699724, 874655, 1049586, 1399448, 1749310, 2099172, 2623965, 3498620, 4198344, 5247930, 6997240, 10495860, 20991720]

約数ペア:

[(1, 20991720), (2, 10495860), (3, 6997240), (4, 5247930), (5, 4198344), (6, 3498620), (8, 2623965), (10, 2099172), (12, 1749310), (15, 1399448), (20, 1049586), (24, 874655), (30, 699724), (40, 524793), (60, 349862), (120, 174931)]