20454621

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{101}}^1$

素因数の和:170

約数の個数: 48

約数和(自身を含む): 33576768

約数和(自身を除く): 13122147

約数列:

[1, 3, 11, 17, 19, 33, 51, 57, 101, 187, 209, 303, 323, 361, 561, 627, 969, 1083, 1111, 1717, 1919, 3333, 3553, 3971, 5151, 5757, 6137, 10659, 11913, 18411, 18887, 21109, 32623, 36461, 56661, 63327, 67507, 97869, 109383, 202521, 358853, 401071, 619837, 1076559, 1203213, 1859511, 6818207, 20454621]

約数ペア:

[(1, 20454621), (3, 6818207), (11, 1859511), (17, 1203213), (19, 1076559), (33, 619837), (51, 401071), (57, 358853), (101, 202521), (187, 109383), (209, 97869), (303, 67507), (323, 63327), (361, 56661), (561, 36461), (627, 32623), (969, 21109), (1083, 18887), (1111, 18411), (1717, 11913), (1919, 10659), (3333, 6137), (3553, 5757), (3971, 5151)]