990290

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:111

約数の個数: 48

約数和(自身を含む): 2166912

約数和(自身を除く): 1176622

約数列:

[1, 2, 5, 7, 10, 14, 35, 43, 47, 49, 70, 86, 94, 98, 215, 235, 245, 301, 329, 430, 470, 490, 602, 658, 1505, 1645, 2021, 2107, 2303, 3010, 3290, 4042, 4214, 4606, 10105, 10535, 11515, 14147, 20210, 21070, 23030, 28294, 70735, 99029, 141470, 198058, 495145, 990290]

約数ペア:

[(1, 990290), (2, 495145), (5, 198058), (7, 141470), (10, 99029), (14, 70735), (35, 28294), (43, 23030), (47, 21070), (49, 20210), (70, 14147), (86, 11515), (94, 10535), (98, 10105), (215, 4606), (235, 4214), (245, 4042), (301, 3290), (329, 3010), (430, 2303), (470, 2107), (490, 2021), (602, 1645), (658, 1505)]