20278035

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{641}}^1$

素因数の和:708

約数の個数: 48

約数和(自身を含む): 38057760

約数和(自身を除く): 17779725

約数列:

[1, 3, 5, 9, 15, 19, 37, 45, 57, 95, 111, 171, 185, 285, 333, 555, 641, 703, 855, 1665, 1923, 2109, 3205, 3515, 5769, 6327, 9615, 10545, 12179, 23717, 28845, 31635, 36537, 60895, 71151, 109611, 118585, 182685, 213453, 355755, 450623, 548055, 1067265, 1351869, 2253115, 4055607, 6759345, 20278035]

約数ペア:

[(1, 20278035), (3, 6759345), (5, 4055607), (9, 2253115), (15, 1351869), (19, 1067265), (37, 548055), (45, 450623), (57, 355755), (95, 213453), (111, 182685), (171, 118585), (185, 109611), (285, 71151), (333, 60895), (555, 36537), (641, 31635), (703, 28845), (855, 23717), (1665, 12179), (1923, 10545), (2109, 9615), (3205, 6327), (3515, 5769)]