18886245

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:194

約数の個数: 64

約数和(自身を含む): 36495360

約数和(自身を除く): 17609115

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 47, 89, 105, 129, 141, 215, 235, 267, 301, 329, 445, 623, 645, 705, 903, 987, 1335, 1505, 1645, 1869, 2021, 3115, 3827, 4183, 4515, 4935, 6063, 9345, 10105, 11481, 12549, 14147, 19135, 20915, 26789, 29281, 30315, 42441, 57405, 62745, 70735, 80367, 87843, 133945, 146405, 179869, 212205, 401835, 439215, 539607, 899345, 1259083, 2698035, 3777249, 6295415, 18886245]

約数ペア:

[(1, 18886245), (3, 6295415), (5, 3777249), (7, 2698035), (15, 1259083), (21, 899345), (35, 539607), (43, 439215), (47, 401835), (89, 212205), (105, 179869), (129, 146405), (141, 133945), (215, 87843), (235, 80367), (267, 70735), (301, 62745), (329, 57405), (445, 42441), (623, 30315), (645, 29281), (705, 26789), (903, 20915), (987, 19135), (1335, 14147), (1505, 12549), (1645, 11481), (1869, 10105), (2021, 9345), (3115, 6063), (3827, 4935), (4183, 4515)]