21508036

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{401}}^1$

素因数の和:492

約数の個数: 48

約数和(自身を含む): 43763328

約数和(自身を除く): 22255292

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 53, 92, 106, 212, 253, 401, 506, 583, 802, 1012, 1166, 1219, 1604, 2332, 2438, 4411, 4876, 8822, 9223, 13409, 17644, 18446, 21253, 26818, 36892, 42506, 53636, 85012, 101453, 202906, 233783, 405812, 467566, 488819, 935132, 977638, 1955276, 5377009, 10754018, 21508036]

約数ペア:

[(1, 21508036), (2, 10754018), (4, 5377009), (11, 1955276), (22, 977638), (23, 935132), (44, 488819), (46, 467566), (53, 405812), (92, 233783), (106, 202906), (212, 101453), (253, 85012), (401, 53636), (506, 42506), (583, 36892), (802, 26818), (1012, 21253), (1166, 18446), (1219, 17644), (1604, 13409), (2332, 9223), (2438, 8822), (4411, 4876)]