81241245

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{1667}}^1$

素因数の和:1719

約数の個数: 48

約数和(自身を含む): 152521920

約数和(自身を除く): 71280675

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 135, 171, 285, 361, 513, 855, 1083, 1667, 1805, 2565, 3249, 5001, 5415, 8335, 9747, 15003, 16245, 25005, 31673, 45009, 48735, 75015, 95019, 158365, 225045, 285057, 475095, 601787, 855171, 1425285, 1805361, 3008935, 4275855, 5416083, 9026805, 16248249, 27080415, 81241245]

約数ペア:

[(1, 81241245), (3, 27080415), (5, 16248249), (9, 9026805), (15, 5416083), (19, 4275855), (27, 3008935), (45, 1805361), (57, 1425285), (95, 855171), (135, 601787), (171, 475095), (285, 285057), (361, 225045), (513, 158365), (855, 95019), (1083, 75015), (1667, 48735), (1805, 45009), (2565, 31673), (3249, 25005), (5001, 16245), (5415, 15003), (8335, 9747)]