20484555

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{349}}^1$

素因数の和:420

約数の個数: 64

約数和(自身を含む): 41395200

約数和(自身を除く): 20910645

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 43, 65, 91, 105, 129, 195, 215, 273, 301, 349, 455, 559, 645, 903, 1047, 1365, 1505, 1677, 1745, 2443, 2795, 3913, 4515, 4537, 5235, 7329, 8385, 11739, 12215, 13611, 15007, 19565, 22685, 31759, 36645, 45021, 58695, 68055, 75035, 95277, 105049, 158795, 195091, 225105, 315147, 476385, 525245, 585273, 975455, 1365637, 1575735, 2926365, 4096911, 6828185, 20484555]

約数ペア:

[(1, 20484555), (3, 6828185), (5, 4096911), (7, 2926365), (13, 1575735), (15, 1365637), (21, 975455), (35, 585273), (39, 525245), (43, 476385), (65, 315147), (91, 225105), (105, 195091), (129, 158795), (195, 105049), (215, 95277), (273, 75035), (301, 68055), (349, 58695), (455, 45021), (559, 36645), (645, 31759), (903, 22685), (1047, 19565), (1365, 15007), (1505, 13611), (1677, 12215), (1745, 11739), (2443, 8385), (2795, 7329), (3913, 5235), (4515, 4537)]