81553780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{52957}}^1$

素因数の和:52984

約数の個数: 48

約数和(自身を含む): 213526656

約数和(自身を除く): 131972876

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 52957, 105914, 211828, 264785, 370699, 529570, 582527, 741398, 1059140, 1165054, 1482796, 1853495, 2330108, 2912635, 3706990, 4077689, 5825270, 7413980, 8155378, 11650540, 16310756, 20388445, 40776890, 81553780]

約数ペア:

[(1, 81553780), (2, 40776890), (4, 20388445), (5, 16310756), (7, 11650540), (10, 8155378), (11, 7413980), (14, 5825270), (20, 4077689), (22, 3706990), (28, 2912635), (35, 2330108), (44, 1853495), (55, 1482796), (70, 1165054), (77, 1059140), (110, 741398), (140, 582527), (154, 529570), (220, 370699), (308, 264785), (385, 211828), (770, 105914), (1540, 52957)]