28917700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{379}}^1$

素因数の和:509

約数の個数: 72

約数和(自身を含む): 72564800

約数和(自身を除く): 43647100

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 109, 140, 175, 218, 350, 379, 436, 545, 700, 758, 763, 1090, 1516, 1526, 1895, 2180, 2653, 2725, 3052, 3790, 3815, 5306, 5450, 7580, 7630, 9475, 10612, 10900, 13265, 15260, 18950, 19075, 26530, 37900, 38150, 41311, 53060, 66325, 76300, 82622, 132650, 165244, 206555, 265300, 289177, 413110, 578354, 826220, 1032775, 1156708, 1445885, 2065550, 2891770, 4131100, 5783540, 7229425, 14458850, 28917700]

約数ペア:

[(1, 28917700), (2, 14458850), (4, 7229425), (5, 5783540), (7, 4131100), (10, 2891770), (14, 2065550), (20, 1445885), (25, 1156708), (28, 1032775), (35, 826220), (50, 578354), (70, 413110), (100, 289177), (109, 265300), (140, 206555), (175, 165244), (218, 132650), (350, 82622), (379, 76300), (436, 66325), (545, 53060), (700, 41311), (758, 38150), (763, 37900), (1090, 26530), (1516, 19075), (1526, 18950), (1895, 15260), (2180, 13265), (2653, 10900), (2725, 10612), (3052, 9475), (3790, 7630), (3815, 7580), (5306, 5450)]