20395270

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{389}}^1$

素因数の和:517

約数の個数: 48

約数和(自身を含む): 43215120

約数和(自身を除く): 22819850

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 107, 214, 245, 389, 490, 535, 749, 778, 1070, 1498, 1945, 2723, 3745, 3890, 5243, 5446, 7490, 10486, 13615, 19061, 26215, 27230, 38122, 41623, 52430, 83246, 95305, 190610, 208115, 291361, 416230, 582722, 1456805, 2039527, 2913610, 4079054, 10197635, 20395270]

約数ペア:

[(1, 20395270), (2, 10197635), (5, 4079054), (7, 2913610), (10, 2039527), (14, 1456805), (35, 582722), (49, 416230), (70, 291361), (98, 208115), (107, 190610), (214, 95305), (245, 83246), (389, 52430), (490, 41623), (535, 38122), (749, 27230), (778, 26215), (1070, 19061), (1498, 13615), (1945, 10486), (2723, 7490), (3745, 5446), (3890, 5243)]