20975020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{1423}}^1$

素因数の和:1510

約数の個数: 48

約数和(自身を含む): 48803328

約数和(自身を除く): 27828308

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 67, 110, 134, 220, 268, 335, 670, 737, 1340, 1423, 1474, 2846, 2948, 3685, 5692, 7115, 7370, 14230, 14740, 15653, 28460, 31306, 62612, 78265, 95341, 156530, 190682, 313060, 381364, 476705, 953410, 1048751, 1906820, 2097502, 4195004, 5243755, 10487510, 20975020]

約数ペア:

[(1, 20975020), (2, 10487510), (4, 5243755), (5, 4195004), (10, 2097502), (11, 1906820), (20, 1048751), (22, 953410), (44, 476705), (55, 381364), (67, 313060), (110, 190682), (134, 156530), (220, 95341), (268, 78265), (335, 62612), (670, 31306), (737, 28460), (1340, 15653), (1423, 14740), (1474, 14230), (2846, 7370), (2948, 7115), (3685, 5692)]