21240176

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{641}}^1$

素因数の和:777

約数の個数: 40

約数和(自身を含む): 43784400

約数和(自身を除く): 22544224

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 109, 152, 218, 304, 436, 641, 872, 1282, 1744, 2071, 2564, 4142, 5128, 8284, 10256, 12179, 16568, 24358, 33136, 48716, 69869, 97432, 139738, 194864, 279476, 558952, 1117904, 1327511, 2655022, 5310044, 10620088, 21240176]

約数ペア:

[(1, 21240176), (2, 10620088), (4, 5310044), (8, 2655022), (16, 1327511), (19, 1117904), (38, 558952), (76, 279476), (109, 194864), (152, 139738), (218, 97432), (304, 69869), (436, 48716), (641, 33136), (872, 24358), (1282, 16568), (1744, 12179), (2071, 10256), (2564, 8284), (4142, 5128)]