20841898

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{419}}^1$

素因数の和:475

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 22703702

約数列:

[1, 2, 7, 11, 14, 17, 19, 22, 34, 38, 77, 119, 133, 154, 187, 209, 238, 266, 323, 374, 418, 419, 646, 838, 1309, 1463, 2261, 2618, 2926, 2933, 3553, 4522, 4609, 5866, 7106, 7123, 7961, 9218, 14246, 15922, 24871, 32263, 49742, 49861, 55727, 64526, 78353, 87571, 99722, 111454, 135337, 156706, 175142, 270674, 548471, 612997, 947359, 1096942, 1225994, 1488707, 1894718, 2977414, 10420949, 20841898]

約数ペア:

[(1, 20841898), (2, 10420949), (7, 2977414), (11, 1894718), (14, 1488707), (17, 1225994), (19, 1096942), (22, 947359), (34, 612997), (38, 548471), (77, 270674), (119, 175142), (133, 156706), (154, 135337), (187, 111454), (209, 99722), (238, 87571), (266, 78353), (323, 64526), (374, 55727), (418, 49861), (419, 49742), (646, 32263), (838, 24871), (1309, 15922), (1463, 14246), (2261, 9218), (2618, 7961), (2926, 7123), (2933, 7106), (3553, 5866), (4522, 4609)]