20681115

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:276

約数の個数: 64

約数和(自身を含む): 41395200

約数和(自身を除く): 20714085

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 109, 139, 195, 273, 327, 417, 455, 545, 695, 763, 973, 1365, 1417, 1635, 1807, 2085, 2289, 2919, 3815, 4251, 4865, 5421, 7085, 9035, 9919, 11445, 12649, 14595, 15151, 21255, 27105, 29757, 37947, 45453, 49595, 63245, 75755, 106057, 148785, 189735, 196963, 227265, 318171, 530285, 590889, 984815, 1378741, 1590855, 2954445, 4136223, 6893705, 20681115]

約数ペア:

[(1, 20681115), (3, 6893705), (5, 4136223), (7, 2954445), (13, 1590855), (15, 1378741), (21, 984815), (35, 590889), (39, 530285), (65, 318171), (91, 227265), (105, 196963), (109, 189735), (139, 148785), (195, 106057), (273, 75755), (327, 63245), (417, 49595), (455, 45453), (545, 37947), (695, 29757), (763, 27105), (973, 21255), (1365, 15151), (1417, 14595), (1635, 12649), (1807, 11445), (2085, 9919), (2289, 9035), (2919, 7085), (3815, 5421), (4251, 4865)]