28278327

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{379}}^1$

素因数の和:436

約数の個数: 64

約数和(自身を含む): 52531200

約数和(自身を除く): 24252873

約数列:

[1, 3, 7, 11, 17, 19, 21, 33, 51, 57, 77, 119, 133, 187, 209, 231, 323, 357, 379, 399, 561, 627, 969, 1137, 1309, 1463, 2261, 2653, 3553, 3927, 4169, 4389, 6443, 6783, 7201, 7959, 10659, 12507, 19329, 21603, 24871, 29183, 45101, 50407, 70873, 74613, 79211, 87549, 122417, 135303, 151221, 212619, 237633, 367251, 496111, 554477, 856919, 1346587, 1488333, 1663431, 2570757, 4039761, 9426109, 28278327]

約数ペア:

[(1, 28278327), (3, 9426109), (7, 4039761), (11, 2570757), (17, 1663431), (19, 1488333), (21, 1346587), (33, 856919), (51, 554477), (57, 496111), (77, 367251), (119, 237633), (133, 212619), (187, 151221), (209, 135303), (231, 122417), (323, 87549), (357, 79211), (379, 74613), (399, 70873), (561, 50407), (627, 45101), (969, 29183), (1137, 24871), (1309, 21603), (1463, 19329), (2261, 12507), (2653, 10659), (3553, 7959), (3927, 7201), (4169, 6783), (4389, 6443)]