21079448

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{1291}}^1$

素因数の和:1467

約数の個数: 32

約数和(自身を含む): 42868560

約数和(自身を除く): 21789112

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 157, 314, 628, 1256, 1291, 2041, 2582, 4082, 5164, 8164, 10328, 16328, 16783, 33566, 67132, 134264, 202687, 405374, 810748, 1621496, 2634931, 5269862, 10539724, 21079448]

約数ペア:

[(1, 21079448), (2, 10539724), (4, 5269862), (8, 2634931), (13, 1621496), (26, 810748), (52, 405374), (104, 202687), (157, 134264), (314, 67132), (628, 33566), (1256, 16783), (1291, 16328), (2041, 10328), (2582, 8164), (4082, 5164)]