21095620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{173}}^1$

素因数の和:269

約数の個数: 96

約数和(自身を含む): 55657728

約数和(自身を除く): 34562108

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 67, 70, 91, 130, 134, 140, 173, 182, 260, 268, 335, 346, 364, 455, 469, 670, 692, 865, 871, 910, 938, 1211, 1340, 1730, 1742, 1820, 1876, 2249, 2345, 2422, 3460, 3484, 4355, 4498, 4690, 4844, 6055, 6097, 8710, 8996, 9380, 11245, 11591, 12110, 12194, 15743, 17420, 22490, 23182, 24220, 24388, 30485, 31486, 44980, 46364, 57955, 60970, 62972, 78715, 81137, 115910, 121940, 150683, 157430, 162274, 231820, 301366, 314860, 324548, 405685, 602732, 753415, 811370, 1054781, 1506830, 1622740, 2109562, 3013660, 4219124, 5273905, 10547810, 21095620]

約数ペア:

[(1, 21095620), (2, 10547810), (4, 5273905), (5, 4219124), (7, 3013660), (10, 2109562), (13, 1622740), (14, 1506830), (20, 1054781), (26, 811370), (28, 753415), (35, 602732), (52, 405685), (65, 324548), (67, 314860), (70, 301366), (91, 231820), (130, 162274), (134, 157430), (140, 150683), (173, 121940), (182, 115910), (260, 81137), (268, 78715), (335, 62972), (346, 60970), (364, 57955), (455, 46364), (469, 44980), (670, 31486), (692, 30485), (865, 24388), (871, 24220), (910, 23182), (938, 22490), (1211, 17420), (1340, 15743), (1730, 12194), (1742, 12110), (1820, 11591), (1876, 11245), (2249, 9380), (2345, 8996), (2422, 8710), (3460, 6097), (3484, 6055), (4355, 4844), (4498, 4690)]