257281648

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{39901}}^1$

素因数の和:39953

約数の個数: 40

約数和(自身を含む): 554158976

約数和(自身を除く): 296877328

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 208, 248, 403, 496, 806, 1612, 3224, 6448, 39901, 79802, 159604, 319208, 518713, 638416, 1037426, 1236931, 2074852, 2473862, 4149704, 4947724, 8299408, 9895448, 16080103, 19790896, 32160206, 64320412, 128640824, 257281648]

約数ペア:

[(1, 257281648), (2, 128640824), (4, 64320412), (8, 32160206), (13, 19790896), (16, 16080103), (26, 9895448), (31, 8299408), (52, 4947724), (62, 4149704), (104, 2473862), (124, 2074852), (208, 1236931), (248, 1037426), (403, 638416), (496, 518713), (806, 319208), (1612, 159604), (3224, 79802), (6448, 39901)]