21261960

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19687}}^1$

素因数の和:19707

約数の個数: 64

約数和(自身を含む): 70876800

約数和(自身を除く): 49614840

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 180, 216, 270, 360, 540, 1080, 19687, 39374, 59061, 78748, 98435, 118122, 157496, 177183, 196870, 236244, 295305, 354366, 393740, 472488, 531549, 590610, 708732, 787480, 885915, 1063098, 1181220, 1417464, 1771830, 2126196, 2362440, 2657745, 3543660, 4252392, 5315490, 7087320, 10630980, 21261960]

約数ペア:

[(1, 21261960), (2, 10630980), (3, 7087320), (4, 5315490), (5, 4252392), (6, 3543660), (8, 2657745), (9, 2362440), (10, 2126196), (12, 1771830), (15, 1417464), (18, 1181220), (20, 1063098), (24, 885915), (27, 787480), (30, 708732), (36, 590610), (40, 531549), (45, 472488), (54, 393740), (60, 354366), (72, 295305), (90, 236244), (108, 196870), (120, 177183), (135, 157496), (180, 118122), (216, 98435), (270, 78748), (360, 59061), (540, 39374), (1080, 19687)]