21591952

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{229}}^1$

素因数の和:391

約数の個数: 40

約数和(自身を含む): 43122240

約数和(自身を除く): 21530288

約数列:

[1, 2, 4, 8, 16, 71, 83, 142, 166, 229, 284, 332, 458, 568, 664, 916, 1136, 1328, 1832, 3664, 5893, 11786, 16259, 19007, 23572, 32518, 38014, 47144, 65036, 76028, 94288, 130072, 152056, 260144, 304112, 1349497, 2698994, 5397988, 10795976, 21591952]

約数ペア:

[(1, 21591952), (2, 10795976), (4, 5397988), (8, 2698994), (16, 1349497), (71, 304112), (83, 260144), (142, 152056), (166, 130072), (229, 94288), (284, 76028), (332, 65036), (458, 47144), (568, 38014), (664, 32518), (916, 23572), (1136, 19007), (1328, 16259), (1832, 11786), (3664, 5893)]