21418748

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{1487}}^1$

素因数の和:1781

約数の個数: 24

約数和(自身を含む): 40539072

約数和(自身を除く): 19120324

約数列:

[1, 2, 4, 13, 26, 52, 277, 554, 1108, 1487, 2974, 3601, 5948, 7202, 14404, 19331, 38662, 77324, 411899, 823798, 1647596, 5354687, 10709374, 21418748]

約数ペア:

[(1, 21418748), (2, 10709374), (4, 5354687), (13, 1647596), (26, 823798), (52, 411899), (277, 77324), (554, 38662), (1108, 19331), (1487, 14404), (2974, 7202), (3601, 5948)]