2019208040

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{102811}}^1$

素因数の和:103313

約数の個数: 32

約数和(自身を含む): 4552515360

約数和(自身を除く): 2533307320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 3928, 4910, 9820, 19640, 102811, 205622, 411244, 514055, 822488, 1028110, 2056220, 4112440, 50480201, 100960402, 201920804, 252401005, 403841608, 504802010, 1009604020, 2019208040]

約数ペア:

[(1, 2019208040), (2, 1009604020), (4, 504802010), (5, 403841608), (8, 252401005), (10, 201920804), (20, 100960402), (40, 50480201), (491, 4112440), (982, 2056220), (1964, 1028110), (2455, 822488), (3928, 514055), (4910, 411244), (9820, 205622), (19640, 102811)]