21452691

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:196

約数の個数: 48

約数和(自身を含む): 34784640

約数和(自身を除く): 13331949

約数列:

[1, 3, 13, 17, 19, 39, 51, 57, 131, 169, 221, 247, 323, 393, 507, 663, 741, 969, 1703, 2227, 2489, 2873, 3211, 4199, 5109, 6681, 7467, 8619, 9633, 12597, 22139, 28951, 32357, 42313, 54587, 66417, 86853, 97071, 126939, 163761, 376363, 420641, 550069, 1129089, 1261923, 1650207, 7150897, 21452691]

約数ペア:

[(1, 21452691), (3, 7150897), (13, 1650207), (17, 1261923), (19, 1129089), (39, 550069), (51, 420641), (57, 376363), (131, 163761), (169, 126939), (221, 97071), (247, 86853), (323, 66417), (393, 54587), (507, 42313), (663, 32357), (741, 28951), (969, 22139), (1703, 12597), (2227, 9633), (2489, 8619), (2873, 7467), (3211, 6681), (4199, 5109)]