774380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1249}}^1$

素因数の和:1289

約数の個数: 24

約数和(自身を含む): 1680000

約数和(自身を除く): 905620

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 1249, 2498, 4996, 6245, 12490, 24980, 38719, 77438, 154876, 193595, 387190, 774380]

約数ペア:

[(1, 774380), (2, 387190), (4, 193595), (5, 154876), (10, 77438), (20, 38719), (31, 24980), (62, 12490), (124, 6245), (155, 4996), (310, 2498), (620, 1249)]