9978980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{677}}^1$

素因数の和:764

約数の個数: 48

約数和(自身を含む): 23236416

約数和(自身を除く): 13257436

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 67, 110, 134, 220, 268, 335, 670, 677, 737, 1340, 1354, 1474, 2708, 2948, 3385, 3685, 6770, 7370, 7447, 13540, 14740, 14894, 29788, 37235, 45359, 74470, 90718, 148940, 181436, 226795, 453590, 498949, 907180, 997898, 1995796, 2494745, 4989490, 9978980]

約数ペア:

[(1, 9978980), (2, 4989490), (4, 2494745), (5, 1995796), (10, 997898), (11, 907180), (20, 498949), (22, 453590), (44, 226795), (55, 181436), (67, 148940), (110, 90718), (134, 74470), (220, 45359), (268, 37235), (335, 29788), (670, 14894), (677, 14740), (737, 13540), (1340, 7447), (1354, 7370), (1474, 6770), (2708, 3685), (2948, 3385)]