64240240

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:314

約数の個数: 80

約数和(自身を含む): 154677600

約数和(自身を除く): 90437360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 109, 139, 212, 218, 265, 278, 424, 436, 530, 545, 556, 695, 848, 872, 1060, 1090, 1112, 1390, 1744, 2120, 2180, 2224, 2780, 4240, 4360, 5560, 5777, 7367, 8720, 11120, 11554, 14734, 15151, 23108, 28885, 29468, 30302, 36835, 46216, 57770, 58936, 60604, 73670, 75755, 92432, 115540, 117872, 121208, 147340, 151510, 231080, 242416, 294680, 303020, 462160, 589360, 606040, 803003, 1212080, 1606006, 3212012, 4015015, 6424024, 8030030, 12848048, 16060060, 32120120, 64240240]

約数ペア:

[(1, 64240240), (2, 32120120), (4, 16060060), (5, 12848048), (8, 8030030), (10, 6424024), (16, 4015015), (20, 3212012), (40, 1606006), (53, 1212080), (80, 803003), (106, 606040), (109, 589360), (139, 462160), (212, 303020), (218, 294680), (265, 242416), (278, 231080), (424, 151510), (436, 147340), (530, 121208), (545, 117872), (556, 115540), (695, 92432), (848, 75755), (872, 73670), (1060, 60604), (1090, 58936), (1112, 57770), (1390, 46216), (1744, 36835), (2120, 30302), (2180, 29468), (2224, 28885), (2780, 23108), (4240, 15151), (4360, 14734), (5560, 11554), (5777, 11120), (7367, 8720)]