21348520

素因数分解:

$2^3\times 5^1\times {\mathrm{533713}}^1$

素因数の和:533724

約数の個数: 16

約数和(自身を含む): 48034260

約数和(自身を除く): 26685740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 533713, 1067426, 2134852, 2668565, 4269704, 5337130, 10674260, 21348520]

約数ペア:

[(1, 21348520), (2, 10674260), (4, 5337130), (5, 4269704), (8, 2668565), (10, 2134852), (20, 1067426), (40, 533713)]