20525163980

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{11530991}}^1$

素因数の和:11531089

約数の個数: 24

約数和(自身を含む): 43587149760

約数和(自身を除く): 23061985780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 11530991, 23061982, 46123964, 57654955, 115309910, 230619820, 1026258199, 2052516398, 4105032796, 5131290995, 10262581990, 20525163980]

約数ペア:

[(1, 20525163980), (2, 10262581990), (4, 5131290995), (5, 4105032796), (10, 2052516398), (20, 1026258199), (89, 230619820), (178, 115309910), (356, 57654955), (445, 46123964), (890, 23061982), (1780, 11530991)]