21478652

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{1303}}^1$

素因数の和:1637

約数の個数: 24

約数和(自身を含む): 40637856

約数和(自身を除く): 19159204

約数列:

[1, 2, 4, 13, 26, 52, 317, 634, 1268, 1303, 2606, 4121, 5212, 8242, 16484, 16939, 33878, 67756, 413051, 826102, 1652204, 5369663, 10739326, 21478652]

約数ペア:

[(1, 21478652), (2, 10739326), (4, 5369663), (13, 1652204), (26, 826102), (52, 413051), (317, 67756), (634, 33878), (1268, 16939), (1303, 16484), (2606, 8242), (4121, 5212)]