21641627

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:267

約数の個数: 32

約数和(自身を含む): 27955200

約数和(自身を除く): 6313573

約数列:

[1, 7, 19, 29, 31, 133, 181, 203, 217, 551, 589, 899, 1267, 3439, 3857, 4123, 5249, 5611, 6293, 17081, 24073, 36743, 39277, 99731, 106609, 119567, 162719, 698117, 746263, 1139033, 3091661, 21641627]

約数ペア:

[(1, 21641627), (7, 3091661), (19, 1139033), (29, 746263), (31, 698117), (133, 162719), (181, 119567), (203, 106609), (217, 99731), (551, 39277), (589, 36743), (899, 24073), (1267, 17081), (3439, 6293), (3857, 5611), (4123, 5249)]