2178182020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{219133}}^1$

素因数の和:219220

約数の個数: 48

約数和(自身を含む): 5301289728

約数和(自身を除く): 3123107708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 219133, 438266, 876532, 1095665, 1533931, 2191330, 3067862, 4382660, 6135724, 7669655, 15339310, 15558443, 30678620, 31116886, 62233772, 77792215, 108909101, 155584430, 217818202, 311168860, 435636404, 544545505, 1089091010, 2178182020]

約数ペア:

[(1, 2178182020), (2, 1089091010), (4, 544545505), (5, 435636404), (7, 311168860), (10, 217818202), (14, 155584430), (20, 108909101), (28, 77792215), (35, 62233772), (70, 31116886), (71, 30678620), (140, 15558443), (142, 15339310), (284, 7669655), (355, 6135724), (497, 4382660), (710, 3067862), (994, 2191330), (1420, 1533931), (1988, 1095665), (2485, 876532), (4970, 438266), (9940, 219133)]