21000474153379

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{7115387}}^1$

素因数の和:7115528

約数の個数: 48

約数和(自身を含む): 26476074132480

約数和(自身を除く): 5475599979101

約数列:

[1, 7, 29, 31, 49, 67, 203, 217, 469, 899, 1421, 1519, 1943, 2077, 3283, 6293, 13601, 14539, 44051, 60233, 95207, 101773, 421631, 2951417, 7115387, 49807709, 206346223, 220576997, 348653963, 476730929, 1444423561, 1544038979, 3337116503, 6396732913, 10110964927, 10808272853, 13825196941, 14778658799, 23359815521, 44777130391, 96776378587, 103450611593, 313439912737, 428581105171, 677434650109, 724154281151, 3000067736197, 21000474153379]

約数ペア:

[(1, 21000474153379), (7, 3000067736197), (29, 724154281151), (31, 677434650109), (49, 428581105171), (67, 313439912737), (203, 103450611593), (217, 96776378587), (469, 44777130391), (899, 23359815521), (1421, 14778658799), (1519, 13825196941), (1943, 10808272853), (2077, 10110964927), (3283, 6396732913), (6293, 3337116503), (13601, 1544038979), (14539, 1444423561), (44051, 476730929), (60233, 348653963), (95207, 220576997), (101773, 206346223), (421631, 49807709), (2951417, 7115387)]