1280279420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{212671}}^1$

素因数の和:212730

約数の個数: 48

約数和(自身を含む): 3144142848

約数和(自身を除く): 1863863428

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 215, 301, 430, 602, 860, 1204, 1505, 3010, 6020, 212671, 425342, 850684, 1063355, 1488697, 2126710, 2977394, 4253420, 5954788, 7443485, 9144853, 14886970, 18289706, 29773940, 36579412, 45724265, 64013971, 91448530, 128027942, 182897060, 256055884, 320069855, 640139710, 1280279420]

約数ペア:

[(1, 1280279420), (2, 640139710), (4, 320069855), (5, 256055884), (7, 182897060), (10, 128027942), (14, 91448530), (20, 64013971), (28, 45724265), (35, 36579412), (43, 29773940), (70, 18289706), (86, 14886970), (140, 9144853), (172, 7443485), (215, 5954788), (301, 4253420), (430, 2977394), (602, 2126710), (860, 1488697), (1204, 1063355), (1505, 850684), (3010, 425342), (6020, 212671)]