21038550

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{10789}}^1$

素因数の和:10817

約数の個数: 48

約数和(自身を含む): 56194320

約数和(自身を除く): 35155770

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 130, 150, 195, 325, 390, 650, 975, 1950, 10789, 21578, 32367, 53945, 64734, 107890, 140257, 161835, 269725, 280514, 323670, 420771, 539450, 701285, 809175, 841542, 1402570, 1618350, 2103855, 3506425, 4207710, 7012850, 10519275, 21038550]

約数ペア:

[(1, 21038550), (2, 10519275), (3, 7012850), (5, 4207710), (6, 3506425), (10, 2103855), (13, 1618350), (15, 1402570), (25, 841542), (26, 809175), (30, 701285), (39, 539450), (50, 420771), (65, 323670), (75, 280514), (78, 269725), (130, 161835), (150, 140257), (195, 107890), (325, 64734), (390, 53945), (650, 32367), (975, 21578), (1950, 10789)]