20739968

素因数分解:

$2^7\times {\mathrm{311}}^1\times {\mathrm{521}}^1$

素因数の和:846

約数の個数: 32

約数和(自身を含む): 41530320

約数和(自身を除く): 20790352

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 311, 521, 622, 1042, 1244, 2084, 2488, 4168, 4976, 8336, 9952, 16672, 19904, 33344, 39808, 66688, 162031, 324062, 648124, 1296248, 2592496, 5184992, 10369984, 20739968]

約数ペア:

[(1, 20739968), (2, 10369984), (4, 5184992), (8, 2592496), (16, 1296248), (32, 648124), (64, 324062), (128, 162031), (311, 66688), (521, 39808), (622, 33344), (1042, 19904), (1244, 16672), (2084, 9952), (2488, 8336), (4168, 4976)]