257965448

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{19531}}^1$

素因数の和:19677

約数の個数: 32

約数和(自身を含む): 525020160

約数和(自身を除く): 267054712

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 127, 254, 508, 1016, 1651, 3302, 6604, 13208, 19531, 39062, 78124, 156248, 253903, 507806, 1015612, 2031224, 2480437, 4960874, 9921748, 19843496, 32245681, 64491362, 128982724, 257965448]

約数ペア:

[(1, 257965448), (2, 128982724), (4, 64491362), (8, 32245681), (13, 19843496), (26, 9921748), (52, 4960874), (104, 2480437), (127, 2031224), (254, 1015612), (508, 507806), (1016, 253903), (1651, 156248), (3302, 78124), (6604, 39062), (13208, 19531)]