20904424

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1$

素因数の和:250

約数の個数: 64

約数和(自身を含む): 44634240

約数和(自身を除く): 23729816

約数列:

[1, 2, 4, 8, 17, 23, 34, 41, 46, 68, 82, 92, 136, 163, 164, 184, 326, 328, 391, 652, 697, 782, 943, 1304, 1394, 1564, 1886, 2771, 2788, 3128, 3749, 3772, 5542, 5576, 6683, 7498, 7544, 11084, 13366, 14996, 16031, 22168, 26732, 29992, 32062, 53464, 63733, 64124, 113611, 127466, 128248, 153709, 227222, 254932, 307418, 454444, 509864, 614836, 908888, 1229672, 2613053, 5226106, 10452212, 20904424]

約数ペア:

[(1, 20904424), (2, 10452212), (4, 5226106), (8, 2613053), (17, 1229672), (23, 908888), (34, 614836), (41, 509864), (46, 454444), (68, 307418), (82, 254932), (92, 227222), (136, 153709), (163, 128248), (164, 127466), (184, 113611), (326, 64124), (328, 63733), (391, 53464), (652, 32062), (697, 29992), (782, 26732), (943, 22168), (1304, 16031), (1394, 14996), (1564, 13366), (1886, 11084), (2771, 7544), (2788, 7498), (3128, 6683), (3749, 5576), (3772, 5542)]