28471989

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{317}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 48722688

約数和(自身を除く): 20250699

約数列:

[1, 3, 7, 13, 21, 39, 47, 49, 91, 141, 147, 273, 317, 329, 611, 637, 951, 987, 1833, 1911, 2219, 2303, 4121, 4277, 6657, 6909, 12363, 12831, 14899, 15533, 28847, 29939, 44697, 46599, 86541, 89817, 104293, 193687, 201929, 312879, 581061, 605787, 730051, 1355809, 2190153, 4067427, 9490663, 28471989]

約数ペア:

[(1, 28471989), (3, 9490663), (7, 4067427), (13, 2190153), (21, 1355809), (39, 730051), (47, 605787), (49, 581061), (91, 312879), (141, 201929), (147, 193687), (273, 104293), (317, 89817), (329, 86541), (611, 46599), (637, 44697), (951, 29939), (987, 28847), (1833, 15533), (1911, 14899), (2219, 12831), (2303, 12363), (4121, 6909), (4277, 6657)]