19681312

素因数分解:

$2^5\times 7^1\times {\mathrm{41}}^1\times {\mathrm{2143}}^1$

素因数の和:2201

約数の個数: 48

約数和(自身を含む): 45384192

約数和(自身を除く): 25702880

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 41, 56, 82, 112, 164, 224, 287, 328, 574, 656, 1148, 1312, 2143, 2296, 4286, 4592, 8572, 9184, 15001, 17144, 30002, 34288, 60004, 68576, 87863, 120008, 175726, 240016, 351452, 480032, 615041, 702904, 1230082, 1405808, 2460164, 2811616, 4920328, 9840656, 19681312]

約数ペア:

[(1, 19681312), (2, 9840656), (4, 4920328), (7, 2811616), (8, 2460164), (14, 1405808), (16, 1230082), (28, 702904), (32, 615041), (41, 480032), (56, 351452), (82, 240016), (112, 175726), (164, 120008), (224, 87863), (287, 68576), (328, 60004), (574, 34288), (656, 30002), (1148, 17144), (1312, 15001), (2143, 9184), (2296, 8572), (4286, 4592)]