19209800

素因数分解:

$2^3\times 5^2\times {\mathrm{139}}^1\times {\mathrm{691}}^1$

素因数の和:846

約数の個数: 48

約数和(自身を含む): 45049200

約数和(自身を除く): 25839400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 139, 200, 278, 556, 691, 695, 1112, 1382, 1390, 2764, 2780, 3455, 3475, 5528, 5560, 6910, 6950, 13820, 13900, 17275, 27640, 27800, 34550, 69100, 96049, 138200, 192098, 384196, 480245, 768392, 960490, 1920980, 2401225, 3841960, 4802450, 9604900, 19209800]

約数ペア:

[(1, 19209800), (2, 9604900), (4, 4802450), (5, 3841960), (8, 2401225), (10, 1920980), (20, 960490), (25, 768392), (40, 480245), (50, 384196), (100, 192098), (139, 138200), (200, 96049), (278, 69100), (556, 34550), (691, 27800), (695, 27640), (1112, 17275), (1382, 13900), (1390, 13820), (2764, 6950), (2780, 6910), (3455, 5560), (3475, 5528)]