778899368

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{389}}^1\times {\mathrm{1481}}^1$

素因数の和:1902

約数の個数: 48

約数和(自身を含む): 1586555100

約数和(自身を除く): 807655732

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 169, 338, 389, 676, 778, 1352, 1481, 1556, 2962, 3112, 5057, 5924, 10114, 11848, 19253, 20228, 38506, 40456, 65741, 77012, 131482, 154024, 250289, 262964, 500578, 525928, 576109, 1001156, 1152218, 2002312, 2304436, 4608872, 7489417, 14978834, 29957668, 59915336, 97362421, 194724842, 389449684, 778899368]

約数ペア:

[(1, 778899368), (2, 389449684), (4, 194724842), (8, 97362421), (13, 59915336), (26, 29957668), (52, 14978834), (104, 7489417), (169, 4608872), (338, 2304436), (389, 2002312), (676, 1152218), (778, 1001156), (1352, 576109), (1481, 525928), (1556, 500578), (2962, 262964), (3112, 250289), (5057, 154024), (5924, 131482), (10114, 77012), (11848, 65741), (19253, 40456), (20228, 38506)]