19854920

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{4639}}^1$

素因数の和:4757

約数の個数: 32

約数和(自身を含む): 45100800

約数和(自身を除く): 25245880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 4639, 9278, 18556, 23195, 37112, 46390, 92780, 185560, 496373, 992746, 1985492, 2481865, 3970984, 4963730, 9927460, 19854920]

約数ペア:

[(1, 19854920), (2, 9927460), (4, 4963730), (5, 3970984), (8, 2481865), (10, 1985492), (20, 992746), (40, 496373), (107, 185560), (214, 92780), (428, 46390), (535, 37112), (856, 23195), (1070, 18556), (2140, 9278), (4280, 4639)]