20657196

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{81973}}^1$

素因数の和:81990

約数の個数: 36

約数和(自身を含む): 59677072

約数和(自身を除く): 39019876

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 81973, 163946, 245919, 327892, 491838, 573811, 737757, 983676, 1147622, 1475514, 1721433, 2295244, 2951028, 3442866, 5164299, 6885732, 10328598, 20657196]

約数ペア:

[(1, 20657196), (2, 10328598), (3, 6885732), (4, 5164299), (6, 3442866), (7, 2951028), (9, 2295244), (12, 1721433), (14, 1475514), (18, 1147622), (21, 983676), (28, 737757), (36, 573811), (42, 491838), (63, 327892), (84, 245919), (126, 163946), (252, 81973)]