20487180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{48779}}^1$

素因数の和:48798

約数の個数: 48

約数和(自身を含む): 65560320

約数和(自身を除く): 45073140

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 48779, 97558, 146337, 195116, 243895, 292674, 341453, 487790, 585348, 682906, 731685, 975580, 1024359, 1365812, 1463370, 1707265, 2048718, 2926740, 3414530, 4097436, 5121795, 6829060, 10243590, 20487180]

約数ペア:

[(1, 20487180), (2, 10243590), (3, 6829060), (4, 5121795), (5, 4097436), (6, 3414530), (7, 2926740), (10, 2048718), (12, 1707265), (14, 1463370), (15, 1365812), (20, 1024359), (21, 975580), (28, 731685), (30, 682906), (35, 585348), (42, 487790), (60, 341453), (70, 292674), (84, 243895), (105, 195116), (140, 146337), (210, 97558), (420, 48779)]