21699424

素因数分解:

$2^5\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{349}}^1$

素因数の和:455

約数の個数: 48

約数和(自身を含む): 44982000

約数和(自身を除く): 23282576

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 67, 116, 134, 232, 268, 349, 464, 536, 698, 928, 1072, 1396, 1943, 2144, 2792, 3886, 5584, 7772, 10121, 11168, 15544, 20242, 23383, 31088, 40484, 46766, 62176, 80968, 93532, 161936, 187064, 323872, 374128, 678107, 748256, 1356214, 2712428, 5424856, 10849712, 21699424]

約数ペア:

[(1, 21699424), (2, 10849712), (4, 5424856), (8, 2712428), (16, 1356214), (29, 748256), (32, 678107), (58, 374128), (67, 323872), (116, 187064), (134, 161936), (232, 93532), (268, 80968), (349, 62176), (464, 46766), (536, 40484), (698, 31088), (928, 23383), (1072, 20242), (1396, 15544), (1943, 11168), (2144, 10121), (2792, 7772), (3886, 5584)]