21861644

素因数分解:

$2^2\times 7^2\times {\mathrm{111539}}^1$

素因数の和:111557

約数の個数: 18

約数和(自身を含む): 44504460

約数和(自身を除く): 22642816

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 111539, 223078, 446156, 780773, 1561546, 3123092, 5465411, 10930822, 21861644]

約数ペア:

[(1, 21861644), (2, 10930822), (4, 5465411), (7, 3123092), (14, 1561546), (28, 780773), (49, 446156), (98, 223078), (196, 111539)]