18980940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{28759}}^1$

素因数の和:28782

約数の個数: 48

約数和(自身を含む): 57980160

約数和(自身を除く): 38999220

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660, 28759, 57518, 86277, 115036, 143795, 172554, 287590, 316349, 345108, 431385, 575180, 632698, 862770, 949047, 1265396, 1581745, 1725540, 1898094, 3163490, 3796188, 4745235, 6326980, 9490470, 18980940]

約数ペア:

[(1, 18980940), (2, 9490470), (3, 6326980), (4, 4745235), (5, 3796188), (6, 3163490), (10, 1898094), (11, 1725540), (12, 1581745), (15, 1265396), (20, 949047), (22, 862770), (30, 632698), (33, 575180), (44, 431385), (55, 345108), (60, 316349), (66, 287590), (110, 172554), (132, 143795), (165, 115036), (220, 86277), (330, 57518), (660, 28759)]