210005290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1129}}^1$

素因数の和:1255

約数の個数: 64

約数和(自身を含む): 439344000

約数和(自身を除く): 229338710

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 89, 95, 110, 178, 190, 209, 418, 445, 890, 979, 1045, 1129, 1691, 1958, 2090, 2258, 3382, 4895, 5645, 8455, 9790, 11290, 12419, 16910, 18601, 21451, 24838, 37202, 42902, 62095, 93005, 100481, 107255, 124190, 186010, 200962, 214510, 235961, 471922, 502405, 1004810, 1105291, 1179805, 1909139, 2210582, 2359610, 3818278, 5526455, 9545695, 11052910, 19091390, 21000529, 42001058, 105002645, 210005290]

約数ペア:

[(1, 210005290), (2, 105002645), (5, 42001058), (10, 21000529), (11, 19091390), (19, 11052910), (22, 9545695), (38, 5526455), (55, 3818278), (89, 2359610), (95, 2210582), (110, 1909139), (178, 1179805), (190, 1105291), (209, 1004810), (418, 502405), (445, 471922), (890, 235961), (979, 214510), (1045, 200962), (1129, 186010), (1691, 124190), (1958, 107255), (2090, 100481), (2258, 93005), (3382, 62095), (4895, 42902), (5645, 37202), (8455, 24838), (9790, 21451), (11290, 18601), (12419, 16910)]