21636784

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{211}}^1$

素因数の和:278

約数の個数: 80

約数和(自身を含む): 49684320

約数和(自身を除く): 28047536

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 29, 34, 52, 58, 68, 104, 116, 136, 208, 211, 221, 232, 272, 377, 422, 442, 464, 493, 754, 844, 884, 986, 1508, 1688, 1768, 1972, 2743, 3016, 3376, 3536, 3587, 3944, 5486, 6032, 6119, 6409, 7174, 7888, 10972, 12238, 12818, 14348, 21944, 24476, 25636, 28696, 43888, 46631, 48952, 51272, 57392, 79547, 93262, 97904, 102544, 104023, 159094, 186524, 208046, 318188, 373048, 416092, 636376, 746096, 832184, 1272752, 1352299, 1664368, 2704598, 5409196, 10818392, 21636784]

約数ペア:

[(1, 21636784), (2, 10818392), (4, 5409196), (8, 2704598), (13, 1664368), (16, 1352299), (17, 1272752), (26, 832184), (29, 746096), (34, 636376), (52, 416092), (58, 373048), (68, 318188), (104, 208046), (116, 186524), (136, 159094), (208, 104023), (211, 102544), (221, 97904), (232, 93262), (272, 79547), (377, 57392), (422, 51272), (442, 48952), (464, 46631), (493, 43888), (754, 28696), (844, 25636), (884, 24476), (986, 21944), (1508, 14348), (1688, 12818), (1768, 12238), (1972, 10972), (2743, 7888), (3016, 7174), (3376, 6409), (3536, 6119), (3587, 6032), (3944, 5486)]