20719800

素因数分解:

$2^3\times 3^4\times 5^2\times {\mathrm{1279}}^1$

素因数の和:1307

約数の個数: 120

約数和(自身を含む): 72019200

約数和(自身を除く): 51299400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 27, 30, 36, 40, 45, 50, 54, 60, 72, 75, 81, 90, 100, 108, 120, 135, 150, 162, 180, 200, 216, 225, 270, 300, 324, 360, 405, 450, 540, 600, 648, 675, 810, 900, 1080, 1279, 1350, 1620, 1800, 2025, 2558, 2700, 3240, 3837, 4050, 5116, 5400, 6395, 7674, 8100, 10232, 11511, 12790, 15348, 16200, 19185, 23022, 25580, 30696, 31975, 34533, 38370, 46044, 51160, 57555, 63950, 69066, 76740, 92088, 95925, 103599, 115110, 127900, 138132, 153480, 172665, 191850, 207198, 230220, 255800, 276264, 287775, 345330, 383700, 414396, 460440, 517995, 575550, 690660, 767400, 828792, 863325, 1035990, 1151100, 1381320, 1726650, 2071980, 2302200, 2589975, 3453300, 4143960, 5179950, 6906600, 10359900, 20719800]

約数ペア:

[(1, 20719800), (2, 10359900), (3, 6906600), (4, 5179950), (5, 4143960), (6, 3453300), (8, 2589975), (9, 2302200), (10, 2071980), (12, 1726650), (15, 1381320), (18, 1151100), (20, 1035990), (24, 863325), (25, 828792), (27, 767400), (30, 690660), (36, 575550), (40, 517995), (45, 460440), (50, 414396), (54, 383700), (60, 345330), (72, 287775), (75, 276264), (81, 255800), (90, 230220), (100, 207198), (108, 191850), (120, 172665), (135, 153480), (150, 138132), (162, 127900), (180, 115110), (200, 103599), (216, 95925), (225, 92088), (270, 76740), (300, 69066), (324, 63950), (360, 57555), (405, 51160), (450, 46044), (540, 38370), (600, 34533), (648, 31975), (675, 30696), (810, 25580), (900, 23022), (1080, 19185), (1279, 16200), (1350, 15348), (1620, 12790), (1800, 11511), (2025, 10232), (2558, 8100), (2700, 7674), (3240, 6395), (3837, 5400), (4050, 5116)]