18591580

素因数分解:

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

素因数の和:395

約数の個数: 72

約数和(自身を含む): 46309536

約数和(自身を除く): 27717956

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 61, 70, 98, 122, 140, 196, 244, 245, 305, 311, 427, 490, 610, 622, 854, 980, 1220, 1244, 1555, 1708, 2135, 2177, 2989, 3110, 4270, 4354, 5978, 6220, 8540, 8708, 10885, 11956, 14945, 15239, 18971, 21770, 29890, 30478, 37942, 43540, 59780, 60956, 75884, 76195, 94855, 132797, 152390, 189710, 265594, 304780, 379420, 531188, 663985, 929579, 1327970, 1859158, 2655940, 3718316, 4647895, 9295790, 18591580]

約数ペア:

[(1, 18591580), (2, 9295790), (4, 4647895), (5, 3718316), (7, 2655940), (10, 1859158), (14, 1327970), (20, 929579), (28, 663985), (35, 531188), (49, 379420), (61, 304780), (70, 265594), (98, 189710), (122, 152390), (140, 132797), (196, 94855), (244, 76195), (245, 75884), (305, 60956), (311, 59780), (427, 43540), (490, 37942), (610, 30478), (622, 29890), (854, 21770), (980, 18971), (1220, 15239), (1244, 14945), (1555, 11956), (1708, 10885), (2135, 8708), (2177, 8540), (2989, 6220), (3110, 5978), (4270, 4354)]