640596960

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{444859}}^1$

素因数の和:444880

約数の個数: 72

約数和(自身を含む): 2186042040

約数和(自身を除く): 1545445080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 444859, 889718, 1334577, 1779436, 2224295, 2669154, 3558872, 4003731, 4448590, 5338308, 6672885, 7117744, 8007462, 8897180, 10676616, 13345770, 14235488, 16014924, 17794360, 20018655, 21353232, 26691540, 32029848, 35588720, 40037310, 42706464, 53383080, 64059696, 71177440, 80074620, 106766160, 128119392, 160149240, 213532320, 320298480, 640596960]

約数ペア:

[(1, 640596960), (2, 320298480), (3, 213532320), (4, 160149240), (5, 128119392), (6, 106766160), (8, 80074620), (9, 71177440), (10, 64059696), (12, 53383080), (15, 42706464), (16, 40037310), (18, 35588720), (20, 32029848), (24, 26691540), (30, 21353232), (32, 20018655), (36, 17794360), (40, 16014924), (45, 14235488), (48, 13345770), (60, 10676616), (72, 8897180), (80, 8007462), (90, 7117744), (96, 6672885), (120, 5338308), (144, 4448590), (160, 4003731), (180, 3558872), (240, 2669154), (288, 2224295), (360, 1779436), (480, 1334577), (720, 889718), (1440, 444859)]