21078128

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{45427}}^1$

素因数の和:45464

約数の個数: 20

約数和(自身を含む): 42248040

約数和(自身を除く): 21169912

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 232, 464, 45427, 90854, 181708, 363416, 726832, 1317383, 2634766, 5269532, 10539064, 21078128]

約数ペア:

[(1, 21078128), (2, 10539064), (4, 5269532), (8, 2634766), (16, 1317383), (29, 726832), (58, 363416), (116, 181708), (232, 90854), (464, 45427)]