256145422

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:281

約数の個数: 64

約数和(自身を含む): 452390400

約数和(自身を除く): 196244978

約数列:

[1, 2, 13, 19, 26, 38, 67, 71, 109, 134, 142, 218, 247, 494, 871, 923, 1273, 1349, 1417, 1742, 1846, 2071, 2546, 2698, 2834, 4142, 4757, 7303, 7739, 9514, 14606, 15478, 16549, 17537, 26923, 33098, 35074, 53846, 61841, 90383, 94939, 100607, 123682, 138757, 147041, 180766, 189878, 201214, 277514, 294082, 518513, 1037026, 1174979, 1803841, 1911533, 2349958, 3607682, 3823066, 6740669, 9851747, 13481338, 19703494, 128072711, 256145422]

約数ペア:

[(1, 256145422), (2, 128072711), (13, 19703494), (19, 13481338), (26, 9851747), (38, 6740669), (67, 3823066), (71, 3607682), (109, 2349958), (134, 1911533), (142, 1803841), (218, 1174979), (247, 1037026), (494, 518513), (871, 294082), (923, 277514), (1273, 201214), (1349, 189878), (1417, 180766), (1742, 147041), (1846, 138757), (2071, 123682), (2546, 100607), (2698, 94939), (2834, 90383), (4142, 61841), (4757, 53846), (7303, 35074), (7739, 33098), (9514, 26923), (14606, 17537), (15478, 16549)]