256117784

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{4673}}^1$

素因数の和:4740

約数の個数: 64

約数和(自身を含む): 565367040

約数和(自身を除く): 309249256

約数列:

[1, 2, 4, 8, 13, 17, 26, 31, 34, 52, 62, 68, 104, 124, 136, 221, 248, 403, 442, 527, 806, 884, 1054, 1612, 1768, 2108, 3224, 4216, 4673, 6851, 9346, 13702, 18692, 27404, 37384, 54808, 60749, 79441, 121498, 144863, 158882, 242996, 289726, 317764, 485992, 579452, 635528, 1032733, 1158904, 1883219, 2065466, 2462671, 3766438, 4130932, 4925342, 7532876, 8261864, 9850684, 15065752, 19701368, 32014723, 64029446, 128058892, 256117784]

約数ペア:

[(1, 256117784), (2, 128058892), (4, 64029446), (8, 32014723), (13, 19701368), (17, 15065752), (26, 9850684), (31, 8261864), (34, 7532876), (52, 4925342), (62, 4130932), (68, 3766438), (104, 2462671), (124, 2065466), (136, 1883219), (221, 1158904), (248, 1032733), (403, 635528), (442, 579452), (527, 485992), (806, 317764), (884, 289726), (1054, 242996), (1612, 158882), (1768, 144863), (2108, 121498), (3224, 79441), (4216, 60749), (4673, 54808), (6851, 37384), (9346, 27404), (13702, 18692)]