257707216

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{2351}}^1$

素因数の和:2420

約数の個数: 80

約数和(自身を含む): 587962368

約数和(自身を除く): 330255152

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 31, 34, 52, 62, 68, 104, 124, 136, 208, 221, 248, 272, 403, 442, 496, 527, 806, 884, 1054, 1612, 1768, 2108, 2351, 3224, 3536, 4216, 4702, 6448, 6851, 8432, 9404, 13702, 18808, 27404, 30563, 37616, 39967, 54808, 61126, 72881, 79934, 109616, 122252, 145762, 159868, 244504, 291524, 319736, 489008, 519571, 583048, 639472, 947453, 1039142, 1166096, 1238977, 1894906, 2078284, 2477954, 3789812, 4156568, 4955908, 7579624, 8313136, 9911816, 15159248, 16106701, 19823632, 32213402, 64426804, 128853608, 257707216]

約数ペア:

[(1, 257707216), (2, 128853608), (4, 64426804), (8, 32213402), (13, 19823632), (16, 16106701), (17, 15159248), (26, 9911816), (31, 8313136), (34, 7579624), (52, 4955908), (62, 4156568), (68, 3789812), (104, 2477954), (124, 2078284), (136, 1894906), (208, 1238977), (221, 1166096), (248, 1039142), (272, 947453), (403, 639472), (442, 583048), (496, 519571), (527, 489008), (806, 319736), (884, 291524), (1054, 244504), (1612, 159868), (1768, 145762), (2108, 122252), (2351, 109616), (3224, 79934), (3536, 72881), (4216, 61126), (4702, 54808), (6448, 39967), (6851, 37616), (8432, 30563), (9404, 27404), (13702, 18808)]