18980950

素因数分解:

$2^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:297

約数の個数: 48

約数和(自身を含む): 37122624

約数和(自身を除く): 18141674

約数列:

[1, 2, 5, 10, 25, 41, 47, 50, 82, 94, 197, 205, 235, 394, 410, 470, 985, 1025, 1175, 1927, 1970, 2050, 2350, 3854, 4925, 8077, 9259, 9635, 9850, 16154, 18518, 19270, 40385, 46295, 48175, 80770, 92590, 96350, 201925, 231475, 379619, 403850, 462950, 759238, 1898095, 3796190, 9490475, 18980950]

約数ペア:

[(1, 18980950), (2, 9490475), (5, 3796190), (10, 1898095), (25, 759238), (41, 462950), (47, 403850), (50, 379619), (82, 231475), (94, 201925), (197, 96350), (205, 92590), (235, 80770), (394, 48175), (410, 46295), (470, 40385), (985, 19270), (1025, 18518), (1175, 16154), (1927, 9850), (1970, 9635), (2050, 9259), (2350, 8077), (3854, 4925)]