19974920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71339}}^1$

素因数の和:71357

約数の個数: 32

約数和(自身を含む): 51364800

約数和(自身を除く): 31389880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71339, 142678, 285356, 356695, 499373, 570712, 713390, 998746, 1426780, 1997492, 2496865, 2853560, 3994984, 4993730, 9987460, 19974920]

約数ペア:

[(1, 19974920), (2, 9987460), (4, 4993730), (5, 3994984), (7, 2853560), (8, 2496865), (10, 1997492), (14, 1426780), (20, 998746), (28, 713390), (35, 570712), (40, 499373), (56, 356695), (70, 285356), (140, 142678), (280, 71339)]