280485500

素因数分解:

$2^2\times 5^3\times {\mathrm{71}}^1\times {\mathrm{7901}}^1$

素因数の和:7991

約数の個数: 48

約数和(自身を含む): 621286848

約数和(自身を除く): 340801348

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 125, 142, 250, 284, 355, 500, 710, 1420, 1775, 3550, 7100, 7901, 8875, 15802, 17750, 31604, 35500, 39505, 79010, 158020, 197525, 395050, 560971, 790100, 987625, 1121942, 1975250, 2243884, 2804855, 3950500, 5609710, 11219420, 14024275, 28048550, 56097100, 70121375, 140242750, 280485500]

約数ペア:

[(1, 280485500), (2, 140242750), (4, 70121375), (5, 56097100), (10, 28048550), (20, 14024275), (25, 11219420), (50, 5609710), (71, 3950500), (100, 2804855), (125, 2243884), (142, 1975250), (250, 1121942), (284, 987625), (355, 790100), (500, 560971), (710, 395050), (1420, 197525), (1775, 158020), (3550, 79010), (7100, 39505), (7901, 35500), (8875, 31604), (15802, 17750)]