639802514

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:435

約数の個数: 64

約数和(自身を含む): 1127831040

約数和(自身を除く): 488028526

約数列:

[1, 2, 13, 17, 26, 34, 73, 79, 146, 158, 221, 251, 442, 502, 949, 1027, 1241, 1343, 1898, 2054, 2482, 2686, 3263, 4267, 5767, 6526, 8534, 11534, 16133, 17459, 18323, 19829, 32266, 34918, 36646, 39658, 55471, 74971, 98039, 110942, 149942, 196078, 238199, 257777, 311491, 337093, 476398, 515554, 622982, 674186, 1274507, 1447517, 2549014, 2895034, 4049383, 4382209, 8098766, 8764418, 18817721, 24607789, 37635442, 49215578, 319901257, 639802514]

約数ペア:

[(1, 639802514), (2, 319901257), (13, 49215578), (17, 37635442), (26, 24607789), (34, 18817721), (73, 8764418), (79, 8098766), (146, 4382209), (158, 4049383), (221, 2895034), (251, 2549014), (442, 1447517), (502, 1274507), (949, 674186), (1027, 622982), (1241, 515554), (1343, 476398), (1898, 337093), (2054, 311491), (2482, 257777), (2686, 238199), (3263, 196078), (4267, 149942), (5767, 110942), (6526, 98039), (8534, 74971), (11534, 55471), (16133, 39658), (17459, 36646), (18323, 34918), (19829, 32266)]