20343760

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2333}}^1$

素因数の和:2455

約数の個数: 40

約数和(自身を含む): 47753640

約数和(自身を除く): 27409880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 2333, 4360, 4666, 8720, 9332, 11665, 18664, 23330, 37328, 46660, 93320, 186640, 254297, 508594, 1017188, 1271485, 2034376, 2542970, 4068752, 5085940, 10171880, 20343760]

約数ペア:

[(1, 20343760), (2, 10171880), (4, 5085940), (5, 4068752), (8, 2542970), (10, 2034376), (16, 1271485), (20, 1017188), (40, 508594), (80, 254297), (109, 186640), (218, 93320), (436, 46660), (545, 37328), (872, 23330), (1090, 18664), (1744, 11665), (2180, 9332), (2333, 8720), (4360, 4666)]