20549872

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1$

素因数の和:326

約数の個数: 80

約数和(自身を含む): 49496832

約数和(自身を除く): 28946960

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 43, 56, 68, 86, 112, 119, 136, 172, 238, 251, 272, 301, 344, 476, 502, 602, 688, 731, 952, 1004, 1204, 1462, 1757, 1904, 2008, 2408, 2924, 3514, 4016, 4267, 4816, 5117, 5848, 7028, 8534, 10234, 10793, 11696, 14056, 17068, 20468, 21586, 28112, 29869, 34136, 40936, 43172, 59738, 68272, 75551, 81872, 86344, 119476, 151102, 172688, 183481, 238952, 302204, 366962, 477904, 604408, 733924, 1208816, 1284367, 1467848, 2568734, 2935696, 5137468, 10274936, 20549872]

約数ペア:

[(1, 20549872), (2, 10274936), (4, 5137468), (7, 2935696), (8, 2568734), (14, 1467848), (16, 1284367), (17, 1208816), (28, 733924), (34, 604408), (43, 477904), (56, 366962), (68, 302204), (86, 238952), (112, 183481), (119, 172688), (136, 151102), (172, 119476), (238, 86344), (251, 81872), (272, 75551), (301, 68272), (344, 59738), (476, 43172), (502, 40936), (602, 34136), (688, 29869), (731, 28112), (952, 21586), (1004, 20468), (1204, 17068), (1462, 14056), (1757, 11696), (1904, 10793), (2008, 10234), (2408, 8534), (2924, 7028), (3514, 5848), (4016, 5117), (4267, 4816)]