21069290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{593}}^1$

素因数の和:647

約数の個数: 64

約数和(自身を含む): 46189440

約数和(自身を除く): 25120150

約数列:

[1, 2, 5, 10, 11, 17, 19, 22, 34, 38, 55, 85, 95, 110, 170, 187, 190, 209, 323, 374, 418, 593, 646, 935, 1045, 1186, 1615, 1870, 2090, 2965, 3230, 3553, 5930, 6523, 7106, 10081, 11267, 13046, 17765, 20162, 22534, 32615, 35530, 50405, 56335, 65230, 100810, 110891, 112670, 123937, 191539, 221782, 247874, 383078, 554455, 619685, 957695, 1108910, 1239370, 1915390, 2106929, 4213858, 10534645, 21069290]

約数ペア:

[(1, 21069290), (2, 10534645), (5, 4213858), (10, 2106929), (11, 1915390), (17, 1239370), (19, 1108910), (22, 957695), (34, 619685), (38, 554455), (55, 383078), (85, 247874), (95, 221782), (110, 191539), (170, 123937), (187, 112670), (190, 110891), (209, 100810), (323, 65230), (374, 56335), (418, 50405), (593, 35530), (646, 32615), (935, 22534), (1045, 20162), (1186, 17765), (1615, 13046), (1870, 11267), (2090, 10081), (2965, 7106), (3230, 6523), (3553, 5930)]