21450981

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{683}}^1$

素因数の和:753

約数の個数: 24

約数和(自身を含む): 31272480

約数和(自身を除く): 9821499

約数列:

[1, 3, 19, 29, 57, 87, 361, 551, 683, 1083, 1653, 2049, 10469, 12977, 19807, 31407, 38931, 59421, 246563, 376333, 739689, 1128999, 7150327, 21450981]

約数ペア:

[(1, 21450981), (3, 7150327), (19, 1128999), (29, 739689), (57, 376333), (87, 246563), (361, 59421), (551, 38931), (683, 31407), (1083, 19807), (1653, 12977), (2049, 10469)]