207780820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{2521}}^1$

素因数の和:2860

約数の個数: 48

約数和(自身を含む): 471573648

約数和(自身を除く): 263792828

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 317, 634, 1268, 1585, 2521, 3170, 4121, 5042, 6340, 8242, 10084, 12605, 16484, 20605, 25210, 32773, 41210, 50420, 65546, 82420, 131092, 163865, 327730, 655460, 799157, 1598314, 3196628, 3995785, 7991570, 10389041, 15983140, 20778082, 41556164, 51945205, 103890410, 207780820]

約数ペア:

[(1, 207780820), (2, 103890410), (4, 51945205), (5, 41556164), (10, 20778082), (13, 15983140), (20, 10389041), (26, 7991570), (52, 3995785), (65, 3196628), (130, 1598314), (260, 799157), (317, 655460), (634, 327730), (1268, 163865), (1585, 131092), (2521, 82420), (3170, 65546), (4121, 50420), (5042, 41210), (6340, 32773), (8242, 25210), (10084, 20605), (12605, 16484)]