21520736

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{349}}^1$

素因数の和:447

約数の個数: 48

約数和(自身を含む): 44452800

約数和(自身を除く): 22932064

約数列:

[1, 2, 4, 8, 16, 32, 41, 47, 82, 94, 164, 188, 328, 349, 376, 656, 698, 752, 1312, 1396, 1504, 1927, 2792, 3854, 5584, 7708, 11168, 14309, 15416, 16403, 28618, 30832, 32806, 57236, 61664, 65612, 114472, 131224, 228944, 262448, 457888, 524896, 672523, 1345046, 2690092, 5380184, 10760368, 21520736]

約数ペア:

[(1, 21520736), (2, 10760368), (4, 5380184), (8, 2690092), (16, 1345046), (32, 672523), (41, 524896), (47, 457888), (82, 262448), (94, 228944), (164, 131224), (188, 114472), (328, 65612), (349, 61664), (376, 57236), (656, 32806), (698, 30832), (752, 28618), (1312, 16403), (1396, 15416), (1504, 14309), (1927, 11168), (2792, 7708), (3854, 5584)]