20910735

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{661}}^1$

素因数の和:728

約数の個数: 48

約数和(自身を含む): 39243360

約数和(自身を除く): 18332625

約数列:

[1, 3, 5, 9, 15, 19, 37, 45, 57, 95, 111, 171, 185, 285, 333, 555, 661, 703, 855, 1665, 1983, 2109, 3305, 3515, 5949, 6327, 9915, 10545, 12559, 24457, 29745, 31635, 37677, 62795, 73371, 113031, 122285, 188385, 220113, 366855, 464683, 565155, 1100565, 1394049, 2323415, 4182147, 6970245, 20910735]

約数ペア:

[(1, 20910735), (3, 6970245), (5, 4182147), (9, 2323415), (15, 1394049), (19, 1100565), (37, 565155), (45, 464683), (57, 366855), (95, 220113), (111, 188385), (171, 122285), (185, 113031), (285, 73371), (333, 62795), (555, 37677), (661, 31635), (703, 29745), (855, 24457), (1665, 12559), (1983, 10545), (2109, 9915), (3305, 6327), (3515, 5949)]