20979900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{23311}}^1$

素因数の和:23331

約数の個数: 54

約数和(自身を含む): 65763152

約数和(自身を除く): 44783252

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 150, 180, 225, 300, 450, 900, 23311, 46622, 69933, 93244, 116555, 139866, 209799, 233110, 279732, 349665, 419598, 466220, 582775, 699330, 839196, 1048995, 1165550, 1398660, 1748325, 2097990, 2331100, 3496650, 4195980, 5244975, 6993300, 10489950, 20979900]

約数ペア:

[(1, 20979900), (2, 10489950), (3, 6993300), (4, 5244975), (5, 4195980), (6, 3496650), (9, 2331100), (10, 2097990), (12, 1748325), (15, 1398660), (18, 1165550), (20, 1048995), (25, 839196), (30, 699330), (36, 582775), (45, 466220), (50, 419598), (60, 349665), (75, 279732), (90, 233110), (100, 209799), (150, 139866), (180, 116555), (225, 93244), (300, 69933), (450, 46622), (900, 23311)]