217672020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{28123}}^1$

素因数の和:28181

約数の個数: 72

約数和(自身を含む): 675650976

約数和(自身を除く): 457978956

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2580, 3870, 7740, 28123, 56246, 84369, 112492, 140615, 168738, 253107, 281230, 337476, 421845, 506214, 562460, 843690, 1012428, 1209289, 1265535, 1687380, 2418578, 2531070, 3627867, 4837156, 5062140, 6046445, 7255734, 10883601, 12092890, 14511468, 18139335, 21767202, 24185780, 36278670, 43534404, 54418005, 72557340, 108836010, 217672020]

約数ペア:

[(1, 217672020), (2, 108836010), (3, 72557340), (4, 54418005), (5, 43534404), (6, 36278670), (9, 24185780), (10, 21767202), (12, 18139335), (15, 14511468), (18, 12092890), (20, 10883601), (30, 7255734), (36, 6046445), (43, 5062140), (45, 4837156), (60, 3627867), (86, 2531070), (90, 2418578), (129, 1687380), (172, 1265535), (180, 1209289), (215, 1012428), (258, 843690), (387, 562460), (430, 506214), (516, 421845), (645, 337476), (774, 281230), (860, 253107), (1290, 168738), (1548, 140615), (1935, 112492), (2580, 84369), (3870, 56246), (7740, 28123)]