21721882

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^2\times {\mathrm{71}}^1$

素因数の和:175

約数の個数: 48

約数和(自身を含む): 41682816

約数和(自身を除く): 19960934

約数列:

[1, 2, 7, 13, 14, 26, 41, 71, 82, 91, 142, 182, 287, 497, 533, 574, 923, 994, 1066, 1681, 1846, 2911, 3362, 3731, 5822, 6461, 7462, 11767, 12922, 20377, 21853, 23534, 37843, 40754, 43706, 75686, 119351, 152971, 238702, 264901, 305942, 529802, 835457, 1551563, 1670914, 3103126, 10860941, 21721882]

約数ペア:

[(1, 21721882), (2, 10860941), (7, 3103126), (13, 1670914), (14, 1551563), (26, 835457), (41, 529802), (71, 305942), (82, 264901), (91, 238702), (142, 152971), (182, 119351), (287, 75686), (497, 43706), (533, 40754), (574, 37843), (923, 23534), (994, 21853), (1066, 20377), (1681, 12922), (1846, 11767), (2911, 7462), (3362, 6461), (3731, 5822)]