21319490

素因数分解:

$2^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{16787}}^1$

素因数の和:16921

約数の個数: 16

約数和(自身を含む): 38679552

約数和(自身を除く): 17360062

約数列:

[1, 2, 5, 10, 127, 254, 635, 1270, 16787, 33574, 83935, 167870, 2131949, 4263898, 10659745, 21319490]

約数ペア:

[(1, 21319490), (2, 10659745), (5, 4263898), (10, 2131949), (127, 167870), (254, 83935), (635, 33574), (1270, 16787)]