19911856

素因数分解:

$2^4\times {\mathrm{691}}^1\times {\mathrm{1801}}^1$

素因数の和:2500

約数の個数: 20

約数和(自身を含む): 38656504

約数和(自身を除く): 18744648

約数列:

[1, 2, 4, 8, 16, 691, 1382, 1801, 2764, 3602, 5528, 7204, 11056, 14408, 28816, 1244491, 2488982, 4977964, 9955928, 19911856]

約数ペア:

[(1, 19911856), (2, 9955928), (4, 4977964), (8, 2488982), (16, 1244491), (691, 28816), (1382, 14408), (1801, 11056), (2764, 7204), (3602, 5528)]