21237896

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{8219}}^1$

素因数の和:8261

約数の個数: 32

約数和(自身を含む): 44388000

約数和(自身を除く): 23150104

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 646, 1292, 2584, 8219, 16438, 32876, 65752, 139723, 156161, 279446, 312322, 558892, 624644, 1117784, 1249288, 2654737, 5309474, 10618948, 21237896]

約数ペア:

[(1, 21237896), (2, 10618948), (4, 5309474), (8, 2654737), (17, 1249288), (19, 1117784), (34, 624644), (38, 558892), (68, 312322), (76, 279446), (136, 156161), (152, 139723), (323, 65752), (646, 32876), (1292, 16438), (2584, 8219)]