208209980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{49811}}^1$

素因数の和:49850

約数の個数: 48

約数和(自身を含む): 502104960

約数和(自身を除く): 293894980

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 49811, 99622, 199244, 249055, 498110, 547921, 946409, 996220, 1095842, 1892818, 2191684, 2739605, 3785636, 4732045, 5479210, 9464090, 10410499, 10958420, 18928180, 20820998, 41641996, 52052495, 104104990, 208209980]

約数ペア:

[(1, 208209980), (2, 104104990), (4, 52052495), (5, 41641996), (10, 20820998), (11, 18928180), (19, 10958420), (20, 10410499), (22, 9464090), (38, 5479210), (44, 4732045), (55, 3785636), (76, 2739605), (95, 2191684), (110, 1892818), (190, 1095842), (209, 996220), (220, 946409), (380, 547921), (418, 498110), (836, 249055), (1045, 199244), (2090, 99622), (4180, 49811)]