19791392

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{281}}^1$

素因数の和:393

約数の個数: 48

約数和(自身を含む): 40932864

約数和(自身を除く): 21141472

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 71, 124, 142, 248, 281, 284, 496, 562, 568, 992, 1124, 1136, 2201, 2248, 2272, 4402, 4496, 8711, 8804, 8992, 17422, 17608, 19951, 34844, 35216, 39902, 69688, 70432, 79804, 139376, 159608, 278752, 319216, 618481, 638432, 1236962, 2473924, 4947848, 9895696, 19791392]

約数ペア:

[(1, 19791392), (2, 9895696), (4, 4947848), (8, 2473924), (16, 1236962), (31, 638432), (32, 618481), (62, 319216), (71, 278752), (124, 159608), (142, 139376), (248, 79804), (281, 70432), (284, 69688), (496, 39902), (562, 35216), (568, 34844), (992, 19951), (1124, 17608), (1136, 17422), (2201, 8992), (2248, 8804), (2272, 8711), (4402, 4496)]