1809306820

素因数分解:

$2^2\times 5^1\times {\mathrm{3911}}^1\times {\mathrm{23131}}^1$

素因数の和:27051

約数の個数: 24

約数和(自身を含む): 3800680128

約数和(自身を除く): 1991373308

約数列:

[1, 2, 4, 5, 10, 20, 3911, 7822, 15644, 19555, 23131, 39110, 46262, 78220, 92524, 115655, 231310, 462620, 90465341, 180930682, 361861364, 452326705, 904653410, 1809306820]

約数ペア:

[(1, 1809306820), (2, 904653410), (4, 452326705), (5, 361861364), (10, 180930682), (20, 90465341), (3911, 462620), (7822, 231310), (15644, 115655), (19555, 92524), (23131, 78220), (39110, 46262)]