21520984

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{857}}^1$

素因数の和:979

約数の個数: 32

約数和(自身を含む): 41904720

約数和(自身を除く): 20383736

約数列:

[1, 2, 4, 8, 43, 73, 86, 146, 172, 292, 344, 584, 857, 1714, 3139, 3428, 6278, 6856, 12556, 25112, 36851, 62561, 73702, 125122, 147404, 250244, 294808, 500488, 2690123, 5380246, 10760492, 21520984]

約数ペア:

[(1, 21520984), (2, 10760492), (4, 5380246), (8, 2690123), (43, 500488), (73, 294808), (86, 250244), (146, 147404), (172, 125122), (292, 73702), (344, 62561), (584, 36851), (857, 25112), (1714, 12556), (3139, 6856), (3428, 6278)]