209912956

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1\times {\mathrm{397}}^1$

素因数の和:670

約数の個数: 48

約数和(自身を含む): 410411232

約数和(自身を除く): 200498276

約数列:

[1, 2, 4, 11, 22, 44, 61, 122, 197, 244, 394, 397, 671, 788, 794, 1342, 1588, 2167, 2684, 4334, 4367, 8668, 8734, 12017, 17468, 24034, 24217, 48068, 48434, 78209, 96868, 132187, 156418, 264374, 266387, 312836, 528748, 532774, 860299, 1065548, 1720598, 3441196, 4770749, 9541498, 19082996, 52478239, 104956478, 209912956]

約数ペア:

[(1, 209912956), (2, 104956478), (4, 52478239), (11, 19082996), (22, 9541498), (44, 4770749), (61, 3441196), (122, 1720598), (197, 1065548), (244, 860299), (394, 532774), (397, 528748), (671, 312836), (788, 266387), (794, 264374), (1342, 156418), (1588, 132187), (2167, 96868), (2684, 78209), (4334, 48434), (4367, 48068), (8668, 24217), (8734, 24034), (12017, 17468)]