1640886940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1065511}}^1$

素因数の和:1065538

約数の個数: 48

約数和(自身を含む): 4296144384

約数和(自身を除く): 2655257444

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 1065511, 2131022, 4262044, 5327555, 7458577, 10655110, 11720621, 14917154, 21310220, 23441242, 29834308, 37292885, 46882484, 58603105, 74585770, 82044347, 117206210, 149171540, 164088694, 234412420, 328177388, 410221735, 820443470, 1640886940]

約数ペア:

[(1, 1640886940), (2, 820443470), (4, 410221735), (5, 328177388), (7, 234412420), (10, 164088694), (11, 149171540), (14, 117206210), (20, 82044347), (22, 74585770), (28, 58603105), (35, 46882484), (44, 37292885), (55, 29834308), (70, 23441242), (77, 21310220), (110, 14917154), (140, 11720621), (154, 10655110), (220, 7458577), (308, 5327555), (385, 4262044), (770, 2131022), (1540, 1065511)]