21003248

素因数分解:

$2^4\times 7^1\times {\mathrm{277}}^1\times {\mathrm{677}}^1$

素因数の和:969

約数の個数: 40

約数和(自身を含む): 46744032

約数和(自身を除く): 25740784

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 277, 554, 677, 1108, 1354, 1939, 2216, 2708, 3878, 4432, 4739, 5416, 7756, 9478, 10832, 15512, 18956, 31024, 37912, 75824, 187529, 375058, 750116, 1312703, 1500232, 2625406, 3000464, 5250812, 10501624, 21003248]

約数ペア:

[(1, 21003248), (2, 10501624), (4, 5250812), (7, 3000464), (8, 2625406), (14, 1500232), (16, 1312703), (28, 750116), (56, 375058), (112, 187529), (277, 75824), (554, 37912), (677, 31024), (1108, 18956), (1354, 15512), (1939, 10832), (2216, 9478), (2708, 7756), (3878, 5416), (4432, 4739)]