21304816

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{7879}}^1$

素因数の和:7913

約数の個数: 30

約数和(自身を含む): 44703240

約数和(自身を除く): 23398424

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 169, 208, 338, 676, 1352, 2704, 7879, 15758, 31516, 63032, 102427, 126064, 204854, 409708, 819416, 1331551, 1638832, 2663102, 5326204, 10652408, 21304816]

約数ペア:

[(1, 21304816), (2, 10652408), (4, 5326204), (8, 2663102), (13, 1638832), (16, 1331551), (26, 819416), (52, 409708), (104, 204854), (169, 126064), (208, 102427), (338, 63032), (676, 31516), (1352, 15758), (2704, 7879)]