18996868

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{4451}}^1$

素因数の和:4563

約数の個数: 24

約数和(自身を含む): 36648864

約数和(自身を除く): 17651996

約数列:

[1, 2, 4, 11, 22, 44, 97, 194, 388, 1067, 2134, 4268, 4451, 8902, 17804, 48961, 97922, 195844, 431747, 863494, 1726988, 4749217, 9498434, 18996868]

約数ペア:

[(1, 18996868), (2, 9498434), (4, 4749217), (11, 1726988), (22, 863494), (44, 431747), (97, 195844), (194, 97922), (388, 48961), (1067, 17804), (2134, 8902), (4268, 4451)]