20654640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{28687}}^1$

素因数の和:28706

約数の個数: 60

約数和(自身を含む): 69367584

約数和(自身を除く): 48712944

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 28687, 57374, 86061, 114748, 143435, 172122, 229496, 258183, 286870, 344244, 430305, 458992, 516366, 573740, 688488, 860610, 1032732, 1147480, 1290915, 1376976, 1721220, 2065464, 2294960, 2581830, 3442440, 4130928, 5163660, 6884880, 10327320, 20654640]

約数ペア:

[(1, 20654640), (2, 10327320), (3, 6884880), (4, 5163660), (5, 4130928), (6, 3442440), (8, 2581830), (9, 2294960), (10, 2065464), (12, 1721220), (15, 1376976), (16, 1290915), (18, 1147480), (20, 1032732), (24, 860610), (30, 688488), (36, 573740), (40, 516366), (45, 458992), (48, 430305), (60, 344244), (72, 286870), (80, 258183), (90, 229496), (120, 172122), (144, 143435), (180, 114748), (240, 86061), (360, 57374), (720, 28687)]