21000895016

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{30493}}^1$

素因数の和:30738

約数の個数: 64

約数和(自身を含む): 43472246400

約数和(自身を除く): 22471351384

約数列:

[1, 2, 4, 8, 19, 23, 38, 46, 76, 92, 152, 184, 197, 394, 437, 788, 874, 1576, 1748, 3496, 3743, 4531, 7486, 9062, 14972, 18124, 29944, 30493, 36248, 60986, 86089, 121972, 172178, 243944, 344356, 579367, 688712, 701339, 1158734, 1402678, 2317468, 2805356, 4634936, 5610712, 6007121, 12014242, 13325441, 24028484, 26650882, 48056968, 53301764, 106603528, 114135299, 138163783, 228270598, 276327566, 456541196, 552655132, 913082392, 1105310264, 2625111877, 5250223754, 10500447508, 21000895016]

約数ペア:

[(1, 21000895016), (2, 10500447508), (4, 5250223754), (8, 2625111877), (19, 1105310264), (23, 913082392), (38, 552655132), (46, 456541196), (76, 276327566), (92, 228270598), (152, 138163783), (184, 114135299), (197, 106603528), (394, 53301764), (437, 48056968), (788, 26650882), (874, 24028484), (1576, 13325441), (1748, 12014242), (3496, 6007121), (3743, 5610712), (4531, 4634936), (7486, 2805356), (9062, 2317468), (14972, 1402678), (18124, 1158734), (29944, 701339), (30493, 688712), (36248, 579367), (60986, 344356), (86089, 243944), (121972, 172178)]