20007405

素因数分解:

$3^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{499}}^1$

素因数の和:533

約数の個数: 56

約数和(自身を含む): 39348000

約数和(自身を除く): 19340595

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 81, 99, 135, 165, 243, 297, 405, 495, 499, 729, 891, 1215, 1485, 1497, 2495, 2673, 3645, 4455, 4491, 5489, 7485, 8019, 13365, 13473, 16467, 22455, 27445, 40095, 40419, 49401, 67365, 82335, 121257, 148203, 202095, 247005, 363771, 444609, 606285, 741015, 1333827, 1818855, 2223045, 4001481, 6669135, 20007405]

約数ペア:

[(1, 20007405), (3, 6669135), (5, 4001481), (9, 2223045), (11, 1818855), (15, 1333827), (27, 741015), (33, 606285), (45, 444609), (55, 363771), (81, 247005), (99, 202095), (135, 148203), (165, 121257), (243, 82335), (297, 67365), (405, 49401), (495, 40419), (499, 40095), (729, 27445), (891, 22455), (1215, 16467), (1485, 13473), (1497, 13365), (2495, 8019), (2673, 7485), (3645, 5489), (4455, 4491)]