30990100

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{7207}}^1$

素因数の和:7264

約数の個数: 36

約数和(自身を含む): 68821984

約数和(自身を除く): 37831884

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 7207, 14414, 28828, 36035, 72070, 144140, 180175, 309901, 360350, 619802, 720700, 1239604, 1549505, 3099010, 6198020, 7747525, 15495050, 30990100]

約数ペア:

[(1, 30990100), (2, 15495050), (4, 7747525), (5, 6198020), (10, 3099010), (20, 1549505), (25, 1239604), (43, 720700), (50, 619802), (86, 360350), (100, 309901), (172, 180175), (215, 144140), (430, 72070), (860, 36035), (1075, 28828), (2150, 14414), (4300, 7207)]