20297900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{271}}^1$

素因数の和:399

約数の個数: 72

約数和(自身を含む): 50996736

約数和(自身を除く): 30698836

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 107, 140, 175, 214, 271, 350, 428, 535, 542, 700, 749, 1070, 1084, 1355, 1498, 1897, 2140, 2675, 2710, 2996, 3745, 3794, 5350, 5420, 6775, 7490, 7588, 9485, 10700, 13550, 14980, 18725, 18970, 27100, 28997, 37450, 37940, 47425, 57994, 74900, 94850, 115988, 144985, 189700, 202979, 289970, 405958, 579940, 724925, 811916, 1014895, 1449850, 2029790, 2899700, 4059580, 5074475, 10148950, 20297900]

約数ペア:

[(1, 20297900), (2, 10148950), (4, 5074475), (5, 4059580), (7, 2899700), (10, 2029790), (14, 1449850), (20, 1014895), (25, 811916), (28, 724925), (35, 579940), (50, 405958), (70, 289970), (100, 202979), (107, 189700), (140, 144985), (175, 115988), (214, 94850), (271, 74900), (350, 57994), (428, 47425), (535, 37940), (542, 37450), (700, 28997), (749, 27100), (1070, 18970), (1084, 18725), (1355, 14980), (1498, 13550), (1897, 10700), (2140, 9485), (2675, 7588), (2710, 7490), (2996, 6775), (3745, 5420), (3794, 5350)]