18924945

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:162

約数の個数: 64

約数和(自身を含む): 34831104

約数和(自身を除く): 15906159

約数列:

[1, 3, 5, 13, 15, 37, 39, 43, 61, 65, 111, 129, 183, 185, 195, 215, 305, 481, 555, 559, 645, 793, 915, 1443, 1591, 1677, 2257, 2379, 2405, 2623, 2795, 3965, 4773, 6771, 7215, 7869, 7955, 8385, 11285, 11895, 13115, 20683, 23865, 29341, 33855, 34099, 39345, 62049, 88023, 97051, 102297, 103415, 146705, 170495, 291153, 310245, 440115, 485255, 511485, 1261663, 1455765, 3784989, 6308315, 18924945]

約数ペア:

[(1, 18924945), (3, 6308315), (5, 3784989), (13, 1455765), (15, 1261663), (37, 511485), (39, 485255), (43, 440115), (61, 310245), (65, 291153), (111, 170495), (129, 146705), (183, 103415), (185, 102297), (195, 97051), (215, 88023), (305, 62049), (481, 39345), (555, 34099), (559, 33855), (645, 29341), (793, 23865), (915, 20683), (1443, 13115), (1591, 11895), (1677, 11285), (2257, 8385), (2379, 7955), (2405, 7869), (2623, 7215), (2795, 6771), (3965, 4773)]