20871290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{367}}^1$

素因数の和:443

約数の個数: 48

約数和(自身を含む): 42287616

約数和(自身を除く): 21416326

約数列:

[1, 2, 5, 10, 11, 22, 47, 55, 94, 110, 121, 235, 242, 367, 470, 517, 605, 734, 1034, 1210, 1835, 2585, 3670, 4037, 5170, 5687, 8074, 11374, 17249, 20185, 28435, 34498, 40370, 44407, 56870, 86245, 88814, 172490, 189739, 222035, 379478, 444070, 948695, 1897390, 2087129, 4174258, 10435645, 20871290]

約数ペア:

[(1, 20871290), (2, 10435645), (5, 4174258), (10, 2087129), (11, 1897390), (22, 948695), (47, 444070), (55, 379478), (94, 222035), (110, 189739), (121, 172490), (235, 88814), (242, 86245), (367, 56870), (470, 44407), (517, 40370), (605, 34498), (734, 28435), (1034, 20185), (1210, 17249), (1835, 11374), (2585, 8074), (3670, 5687), (4037, 5170)]