19945944

素因数分解:

$2^3\times 3^2\times {\mathrm{139}}^1\times {\mathrm{1993}}^1$

素因数の和:2144

約数の個数: 48

約数和(自身を含む): 54436200

約数和(自身を除く): 34490256

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 139, 278, 417, 556, 834, 1112, 1251, 1668, 1993, 2502, 3336, 3986, 5004, 5979, 7972, 10008, 11958, 15944, 17937, 23916, 35874, 47832, 71748, 143496, 277027, 554054, 831081, 1108108, 1662162, 2216216, 2493243, 3324324, 4986486, 6648648, 9972972, 19945944]

約数ペア:

[(1, 19945944), (2, 9972972), (3, 6648648), (4, 4986486), (6, 3324324), (8, 2493243), (9, 2216216), (12, 1662162), (18, 1108108), (24, 831081), (36, 554054), (72, 277027), (139, 143496), (278, 71748), (417, 47832), (556, 35874), (834, 23916), (1112, 17937), (1251, 15944), (1668, 11958), (1993, 10008), (2502, 7972), (3336, 5979), (3986, 5004)]