20258780

素因数分解:

$2^2\times 5^1\times {\mathrm{811}}^1\times {\mathrm{1249}}^1$

素因数の和:2069

約数の個数: 24

約数和(自身を含む): 42630000

約数和(自身を除く): 22371220

約数列:

[1, 2, 4, 5, 10, 20, 811, 1249, 1622, 2498, 3244, 4055, 4996, 6245, 8110, 12490, 16220, 24980, 1012939, 2025878, 4051756, 5064695, 10129390, 20258780]

約数ペア:

[(1, 20258780), (2, 10129390), (4, 5064695), (5, 4051756), (10, 2025878), (20, 1012939), (811, 24980), (1249, 16220), (1622, 12490), (2498, 8110), (3244, 6245), (4055, 4996)]