7781220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{311}}^1$

素因数の和:465

約数の個数: 72

約数和(自身を含む): 23849280

約数和(自身を除く): 16068060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 139, 180, 278, 311, 417, 556, 622, 695, 834, 933, 1244, 1251, 1390, 1555, 1668, 1866, 2085, 2502, 2780, 2799, 3110, 3732, 4170, 4665, 5004, 5598, 6220, 6255, 8340, 9330, 11196, 12510, 13995, 18660, 25020, 27990, 43229, 55980, 86458, 129687, 172916, 216145, 259374, 389061, 432290, 518748, 648435, 778122, 864580, 1296870, 1556244, 1945305, 2593740, 3890610, 7781220]

約数ペア:

[(1, 7781220), (2, 3890610), (3, 2593740), (4, 1945305), (5, 1556244), (6, 1296870), (9, 864580), (10, 778122), (12, 648435), (15, 518748), (18, 432290), (20, 389061), (30, 259374), (36, 216145), (45, 172916), (60, 129687), (90, 86458), (139, 55980), (180, 43229), (278, 27990), (311, 25020), (417, 18660), (556, 13995), (622, 12510), (695, 11196), (834, 9330), (933, 8340), (1244, 6255), (1251, 6220), (1390, 5598), (1555, 5004), (1668, 4665), (1866, 4170), (2085, 3732), (2502, 3110), (2780, 2799)]