20965456

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{21481}}^1$

素因数の和:21550

約数の個数: 20

約数和(自身を含む): 41288404

約数和(自身を除く): 20322948

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 21481, 42962, 85924, 171848, 343696, 1310341, 2620682, 5241364, 10482728, 20965456]

約数ペア:

[(1, 20965456), (2, 10482728), (4, 5241364), (8, 2620682), (16, 1310341), (61, 343696), (122, 171848), (244, 85924), (488, 42962), (976, 21481)]