20651680

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18439}}^1$

素因数の和:18461

約数の個数: 48

約数和(自身を含む): 55762560

約数和(自身を除く): 35110880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18439, 36878, 73756, 92195, 129073, 147512, 184390, 258146, 295024, 368780, 516292, 590048, 645365, 737560, 1032584, 1290730, 1475120, 2065168, 2581460, 2950240, 4130336, 5162920, 10325840, 20651680]

約数ペア:

[(1, 20651680), (2, 10325840), (4, 5162920), (5, 4130336), (7, 2950240), (8, 2581460), (10, 2065168), (14, 1475120), (16, 1290730), (20, 1032584), (28, 737560), (32, 645365), (35, 590048), (40, 516292), (56, 368780), (70, 295024), (80, 258146), (112, 184390), (140, 147512), (160, 129073), (224, 92195), (280, 73756), (560, 36878), (1120, 18439)]