20871956

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{39233}}^1$

素因数の和:39263

約数の個数: 24

約数和(自身を含む): 43942080

約数和(自身を除く): 23070124

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 39233, 78466, 156932, 274631, 549262, 745427, 1098524, 1490854, 2981708, 5217989, 10435978, 20871956]

約数ペア:

[(1, 20871956), (2, 10435978), (4, 5217989), (7, 2981708), (14, 1490854), (19, 1098524), (28, 745427), (38, 549262), (76, 274631), (133, 156932), (266, 78466), (532, 39233)]