42187780

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1\times {\mathrm{173}}^1$

素因数の和:408

約数の個数: 48

約数和(自身を含む): 90765360

約数和(自身を除く): 48577580

約数列:

[1, 2, 4, 5, 10, 20, 89, 137, 173, 178, 274, 346, 356, 445, 548, 685, 692, 865, 890, 1370, 1730, 1780, 2740, 3460, 12193, 15397, 23701, 24386, 30794, 47402, 48772, 60965, 61588, 76985, 94804, 118505, 121930, 153970, 237010, 243860, 307940, 474020, 2109389, 4218778, 8437556, 10546945, 21093890, 42187780]

約数ペア:

[(1, 42187780), (2, 21093890), (4, 10546945), (5, 8437556), (10, 4218778), (20, 2109389), (89, 474020), (137, 307940), (173, 243860), (178, 237010), (274, 153970), (346, 121930), (356, 118505), (445, 94804), (548, 76985), (685, 61588), (692, 60965), (865, 48772), (890, 47402), (1370, 30794), (1730, 24386), (1780, 23701), (2740, 15397), (3460, 12193)]