261312688

素因数分解:

$2^4\times 7^2\times {\mathrm{13}}^1\times {\mathrm{25639}}^1$

素因数の和:25674

約数の個数: 60

約数和(自身を含む): 634282320

約数和(自身を除く): 372969632

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 49, 52, 56, 91, 98, 104, 112, 182, 196, 208, 364, 392, 637, 728, 784, 1274, 1456, 2548, 5096, 10192, 25639, 51278, 102556, 179473, 205112, 333307, 358946, 410224, 666614, 717892, 1256311, 1333228, 1435784, 2333149, 2512622, 2666456, 2871568, 4666298, 5025244, 5332912, 9332596, 10050488, 16332043, 18665192, 20100976, 32664086, 37330384, 65328172, 130656344, 261312688]

約数ペア:

[(1, 261312688), (2, 130656344), (4, 65328172), (7, 37330384), (8, 32664086), (13, 20100976), (14, 18665192), (16, 16332043), (26, 10050488), (28, 9332596), (49, 5332912), (52, 5025244), (56, 4666298), (91, 2871568), (98, 2666456), (104, 2512622), (112, 2333149), (182, 1435784), (196, 1333228), (208, 1256311), (364, 717892), (392, 666614), (637, 410224), (728, 358946), (784, 333307), (1274, 205112), (1456, 179473), (2548, 102556), (5096, 51278), (10192, 25639)]