21688624

素因数分解:

$2^4\times {\mathrm{167}}^1\times {\mathrm{8117}}^1$

素因数の和:8292

約数の個数: 20

約数和(自身を含む): 42278544

約数和(自身を除く): 20589920

約数列:

[1, 2, 4, 8, 16, 167, 334, 668, 1336, 2672, 8117, 16234, 32468, 64936, 129872, 1355539, 2711078, 5422156, 10844312, 21688624]

約数ペア:

[(1, 21688624), (2, 10844312), (4, 5422156), (8, 2711078), (16, 1355539), (167, 129872), (334, 64936), (668, 32468), (1336, 16234), (2672, 8117)]