128685712

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{401}}^1\times {\mathrm{647}}^1$

素因数の和:1087

約数の個数: 40

約数和(自身を含む): 258412032

約数和(自身を除く): 129726320

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 401, 496, 647, 802, 1294, 1604, 2588, 3208, 5176, 6416, 10352, 12431, 20057, 24862, 40114, 49724, 80228, 99448, 160456, 198896, 259447, 320912, 518894, 1037788, 2075576, 4151152, 8042857, 16085714, 32171428, 64342856, 128685712]

約数ペア:

[(1, 128685712), (2, 64342856), (4, 32171428), (8, 16085714), (16, 8042857), (31, 4151152), (62, 2075576), (124, 1037788), (248, 518894), (401, 320912), (496, 259447), (647, 198896), (802, 160456), (1294, 99448), (1604, 80228), (2588, 49724), (3208, 40114), (5176, 24862), (6416, 20057), (10352, 12431)]