20945204

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{12263}}^1$

素因数の和:12335

約数の個数: 24

約数和(自身を含む): 42580608

約数和(自身を除く): 21635404

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 12263, 24526, 49052, 85841, 171682, 343364, 748043, 1496086, 2992172, 5236301, 10472602, 20945204]

約数ペア:

[(1, 20945204), (2, 10472602), (4, 5236301), (7, 2992172), (14, 1496086), (28, 748043), (61, 343364), (122, 171682), (244, 85841), (427, 49052), (854, 24526), (1708, 12263)]