2655940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{311}}^1$

素因数の和:388

約数の個数: 48

約数和(自身を含む): 6499584

約数和(自身を除く): 3843644

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 311, 427, 610, 622, 854, 1220, 1244, 1555, 1708, 2135, 2177, 3110, 4270, 4354, 6220, 8540, 8708, 10885, 18971, 21770, 37942, 43540, 75884, 94855, 132797, 189710, 265594, 379420, 531188, 663985, 1327970, 2655940]

約数ペア:

[(1, 2655940), (2, 1327970), (4, 663985), (5, 531188), (7, 379420), (10, 265594), (14, 189710), (20, 132797), (28, 94855), (35, 75884), (61, 43540), (70, 37942), (122, 21770), (140, 18971), (244, 10885), (305, 8708), (311, 8540), (427, 6220), (610, 4354), (622, 4270), (854, 3110), (1220, 2177), (1244, 2135), (1555, 1708)]