20851928

素因数分解:

$2^3\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{311}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 43102800

約数和(自身を除く): 22250872

約数列:

[1, 2, 4, 8, 17, 29, 34, 58, 68, 116, 136, 232, 289, 311, 493, 578, 622, 986, 1156, 1244, 1972, 2312, 2488, 3944, 5287, 8381, 9019, 10574, 16762, 18038, 21148, 33524, 36076, 42296, 67048, 72152, 89879, 153323, 179758, 306646, 359516, 613292, 719032, 1226584, 2606491, 5212982, 10425964, 20851928]

約数ペア:

[(1, 20851928), (2, 10425964), (4, 5212982), (8, 2606491), (17, 1226584), (29, 719032), (34, 613292), (58, 359516), (68, 306646), (116, 179758), (136, 153323), (232, 89879), (289, 72152), (311, 67048), (493, 42296), (578, 36076), (622, 33524), (986, 21148), (1156, 18038), (1244, 16762), (1972, 10574), (2312, 9019), (2488, 8381), (3944, 5287)]