640432080

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{889489}}^1$

素因数の和:889508

約数の個数: 60

約数和(自身を含む): 2150786820

約数和(自身を除く): 1510354740

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, 889489, 1778978, 2668467, 3557956, 4447445, 5336934, 7115912, 8005401, 8894890, 10673868, 13342335, 14231824, 16010802, 17789780, 21347736, 26684670, 32021604, 35579560, 40027005, 42695472, 53369340, 64043208, 71159120, 80054010, 106738680, 128086416, 160108020, 213477360, 320216040, 640432080]

約数ペア:

[(1, 640432080), (2, 320216040), (3, 213477360), (4, 160108020), (5, 128086416), (6, 106738680), (8, 80054010), (9, 71159120), (10, 64043208), (12, 53369340), (15, 42695472), (16, 40027005), (18, 35579560), (20, 32021604), (24, 26684670), (30, 21347736), (36, 17789780), (40, 16010802), (45, 14231824), (48, 13342335), (60, 10673868), (72, 8894890), (80, 8005401), (90, 7115912), (120, 5336934), (144, 4447445), (180, 3557956), (240, 2668467), (360, 1778978), (720, 889489)]