21390952

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{5653}}^1$

素因数の和:5713

約数の個数: 32

約数和(自身を含む): 44779680

約数和(自身を除く): 23388728

約数列:

[1, 2, 4, 8, 11, 22, 43, 44, 86, 88, 172, 344, 473, 946, 1892, 3784, 5653, 11306, 22612, 45224, 62183, 124366, 243079, 248732, 486158, 497464, 972316, 1944632, 2673869, 5347738, 10695476, 21390952]

約数ペア:

[(1, 21390952), (2, 10695476), (4, 5347738), (8, 2673869), (11, 1944632), (22, 972316), (43, 497464), (44, 486158), (86, 248732), (88, 243079), (172, 124366), (344, 62183), (473, 45224), (946, 22612), (1892, 11306), (3784, 5653)]