205839280

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{1129}}^1$

素因数の和:1238

約数の個数: 80

約数和(自身を含む): 499387680

約数和(自身を除く): 293548400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 53, 80, 86, 106, 172, 212, 215, 265, 344, 424, 430, 530, 688, 848, 860, 1060, 1129, 1720, 2120, 2258, 2279, 3440, 4240, 4516, 4558, 5645, 9032, 9116, 11290, 11395, 18064, 18232, 22580, 22790, 36464, 45160, 45580, 48547, 59837, 90320, 91160, 97094, 119674, 182320, 194188, 239348, 242735, 299185, 388376, 478696, 485470, 598370, 776752, 957392, 970940, 1196740, 1941880, 2393480, 2572991, 3883760, 4786960, 5145982, 10291964, 12864955, 20583928, 25729910, 41167856, 51459820, 102919640, 205839280]

約数ペア:

[(1, 205839280), (2, 102919640), (4, 51459820), (5, 41167856), (8, 25729910), (10, 20583928), (16, 12864955), (20, 10291964), (40, 5145982), (43, 4786960), (53, 3883760), (80, 2572991), (86, 2393480), (106, 1941880), (172, 1196740), (212, 970940), (215, 957392), (265, 776752), (344, 598370), (424, 485470), (430, 478696), (530, 388376), (688, 299185), (848, 242735), (860, 239348), (1060, 194188), (1129, 182320), (1720, 119674), (2120, 97094), (2258, 91160), (2279, 90320), (3440, 59837), (4240, 48547), (4516, 45580), (4558, 45160), (5645, 36464), (9032, 22790), (9116, 22580), (11290, 18232), (11395, 18064)]