81420500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{541}}^1$

素因数の和:610

約数の個数: 96

約数和(自身を含む): 208336128

約数和(自身を除く): 126915628

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 43, 50, 70, 86, 100, 125, 140, 172, 175, 215, 250, 301, 350, 430, 500, 541, 602, 700, 860, 875, 1075, 1082, 1204, 1505, 1750, 2150, 2164, 2705, 3010, 3500, 3787, 4300, 5375, 5410, 6020, 7525, 7574, 10750, 10820, 13525, 15050, 15148, 18935, 21500, 23263, 27050, 30100, 37625, 37870, 46526, 54100, 67625, 75250, 75740, 93052, 94675, 116315, 135250, 150500, 162841, 189350, 232630, 270500, 325682, 378700, 465260, 473375, 581575, 651364, 814205, 946750, 1163150, 1628410, 1893500, 2326300, 2907875, 3256820, 4071025, 5815750, 8142050, 11631500, 16284100, 20355125, 40710250, 81420500]

約数ペア:

[(1, 81420500), (2, 40710250), (4, 20355125), (5, 16284100), (7, 11631500), (10, 8142050), (14, 5815750), (20, 4071025), (25, 3256820), (28, 2907875), (35, 2326300), (43, 1893500), (50, 1628410), (70, 1163150), (86, 946750), (100, 814205), (125, 651364), (140, 581575), (172, 473375), (175, 465260), (215, 378700), (250, 325682), (301, 270500), (350, 232630), (430, 189350), (500, 162841), (541, 150500), (602, 135250), (700, 116315), (860, 94675), (875, 93052), (1075, 75740), (1082, 75250), (1204, 67625), (1505, 54100), (1750, 46526), (2150, 37870), (2164, 37625), (2705, 30100), (3010, 27050), (3500, 23263), (3787, 21500), (4300, 18935), (5375, 15148), (5410, 15050), (6020, 13525), (7525, 10820), (7574, 10750)]