21259786

素因数分解:

$2^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1\times {\mathrm{1439}}^1$

素因数の和:1613

約数の個数: 16

約数和(自身を含む): 32659200

約数和(自身を除く): 11399414

約数列:

[1, 2, 83, 89, 166, 178, 1439, 2878, 7387, 14774, 119437, 128071, 238874, 256142, 10629893, 21259786]

約数ペア:

[(1, 21259786), (2, 10629893), (83, 256142), (89, 238874), (166, 128071), (178, 119437), (1439, 14774), (2878, 7387)]