20122865990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{821}}^1\times {\mathrm{129001}}^1$

素因数の和:129848

約数の個数: 32

約数和(自身を含む): 38174271840

約数和(自身を除く): 18051405850

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 821, 1642, 4105, 8210, 15599, 31198, 77995, 129001, 155990, 258002, 645005, 1290010, 2451019, 4902038, 12255095, 24510190, 105909821, 211819642, 529549105, 1059098210, 2012286599, 4024573198, 10061432995, 20122865990]

約数ペア:

[(1, 20122865990), (2, 10061432995), (5, 4024573198), (10, 2012286599), (19, 1059098210), (38, 529549105), (95, 211819642), (190, 105909821), (821, 24510190), (1642, 12255095), (4105, 4902038), (8210, 2451019), (15599, 1290010), (31198, 645005), (77995, 258002), (129001, 155990)]