20847218

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{433}}^1$

素因数の和:642

約数の個数: 32

約数和(自身を含む): 37914240

約数和(自身を除く): 17067022

約数列:

[1, 2, 7, 14, 19, 38, 133, 181, 266, 362, 433, 866, 1267, 2534, 3031, 3439, 6062, 6878, 8227, 16454, 24073, 48146, 57589, 78373, 115178, 156746, 548611, 1097222, 1489087, 2978174, 10423609, 20847218]

約数ペア:

[(1, 20847218), (2, 10423609), (7, 2978174), (14, 1489087), (19, 1097222), (38, 548611), (133, 156746), (181, 115178), (266, 78373), (362, 57589), (433, 48146), (866, 24073), (1267, 16454), (2534, 8227), (3031, 6878), (3439, 6062)]