20840988

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1811}}^1$

素因数の和:1962

約数の個数: 48

約数和(自身を含む): 56012544

約数和(自身を除く): 35171556

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 137, 274, 411, 548, 822, 959, 1644, 1811, 1918, 2877, 3622, 3836, 5433, 5754, 7244, 10866, 11508, 12677, 21732, 25354, 38031, 50708, 76062, 152124, 248107, 496214, 744321, 992428, 1488642, 1736749, 2977284, 3473498, 5210247, 6946996, 10420494, 20840988]

約数ペア:

[(1, 20840988), (2, 10420494), (3, 6946996), (4, 5210247), (6, 3473498), (7, 2977284), (12, 1736749), (14, 1488642), (21, 992428), (28, 744321), (42, 496214), (84, 248107), (137, 152124), (274, 76062), (411, 50708), (548, 38031), (822, 25354), (959, 21732), (1644, 12677), (1811, 11508), (1918, 10866), (2877, 7244), (3622, 5754), (3836, 5433)]