20511170

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{257}}^1\times {\mathrm{347}}^1$

素因数の和:634

約数の個数: 32

約数和(自身を含む): 38786688

約数和(自身を除く): 18275518

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 257, 347, 514, 694, 1285, 1735, 2570, 3470, 5911, 7981, 11822, 15962, 29555, 39905, 59110, 79810, 89179, 178358, 445895, 891790, 2051117, 4102234, 10255585, 20511170]

約数ペア:

[(1, 20511170), (2, 10255585), (5, 4102234), (10, 2051117), (23, 891790), (46, 445895), (115, 178358), (230, 89179), (257, 79810), (347, 59110), (514, 39905), (694, 29555), (1285, 15962), (1735, 11822), (2570, 7981), (3470, 5911)]