991706420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1153147}}^1$

素因数の和:1153199

約数の個数: 24

約数和(自身を含む): 2131017504

約数和(自身を除く): 1139311084

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 1153147, 2306294, 4612588, 5765735, 11531470, 23062940, 49585321, 99170642, 198341284, 247926605, 495853210, 991706420]

約数ペア:

[(1, 991706420), (2, 495853210), (4, 247926605), (5, 198341284), (10, 99170642), (20, 49585321), (43, 23062940), (86, 11531470), (172, 5765735), (215, 4612588), (430, 2306294), (860, 1153147)]