20513696

素因数分解:

$2^5\times 7^1\times {\mathrm{17}}^1\times {\mathrm{5387}}^1$

素因数の和:5421

約数の個数: 48

約数和(自身を含む): 48879936

約数和(自身を除く): 28366240

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 68, 112, 119, 136, 224, 238, 272, 476, 544, 952, 1904, 3808, 5387, 10774, 21548, 37709, 43096, 75418, 86192, 91579, 150836, 172384, 183158, 301672, 366316, 603344, 641053, 732632, 1206688, 1282106, 1465264, 2564212, 2930528, 5128424, 10256848, 20513696]

約数ペア:

[(1, 20513696), (2, 10256848), (4, 5128424), (7, 2930528), (8, 2564212), (14, 1465264), (16, 1282106), (17, 1206688), (28, 732632), (32, 641053), (34, 603344), (56, 366316), (68, 301672), (112, 183158), (119, 172384), (136, 150836), (224, 91579), (238, 86192), (272, 75418), (476, 43096), (544, 37709), (952, 21548), (1904, 10774), (3808, 5387)]