21998520068

素因数分解:

$2^2\times 7^1\times {\mathrm{1181}}^1\times {\mathrm{665251}}^1$

素因数の和:666443

約数の個数: 24

約数和(自身を含む): 44034360384

約数和(自身を除く): 22035840316

約数列:

[1, 2, 4, 7, 14, 28, 1181, 2362, 4724, 8267, 16534, 33068, 665251, 1330502, 2661004, 4656757, 9313514, 18627028, 785661431, 1571322862, 3142645724, 5499630017, 10999260034, 21998520068]

約数ペア:

[(1, 21998520068), (2, 10999260034), (4, 5499630017), (7, 3142645724), (14, 1571322862), (28, 785661431), (1181, 18627028), (2362, 9313514), (4724, 4656757), (8267, 2661004), (16534, 1330502), (33068, 665251)]