19812255

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{311}}^1$

素因数の和:487

約数の個数: 32

約数和(自身を含む): 33067008

約数和(自身を除く): 13254753

約数列:

[1, 3, 5, 15, 31, 93, 137, 155, 311, 411, 465, 685, 933, 1555, 2055, 4247, 4665, 9641, 12741, 21235, 28923, 42607, 48205, 63705, 127821, 144615, 213035, 639105, 1320817, 3962451, 6604085, 19812255]

約数ペア:

[(1, 19812255), (3, 6604085), (5, 3962451), (15, 1320817), (31, 639105), (93, 213035), (137, 144615), (155, 127821), (311, 63705), (411, 48205), (465, 42607), (685, 28923), (933, 21235), (1555, 12741), (2055, 9641), (4247, 4665)]