20791641

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:265

約数の個数: 32

約数和(自身を含む): 30997120

約数和(自身を除く): 10205479

約数列:

[1, 3, 13, 39, 67, 73, 109, 201, 219, 327, 871, 949, 1417, 2613, 2847, 4251, 4891, 7303, 7957, 14673, 21909, 23871, 63583, 94939, 103441, 190749, 284817, 310323, 533119, 1599357, 6930547, 20791641]

約数ペア:

[(1, 20791641), (3, 6930547), (13, 1599357), (39, 533119), (67, 310323), (73, 284817), (109, 190749), (201, 103441), (219, 94939), (327, 63583), (871, 23871), (949, 21909), (1417, 14673), (2613, 7957), (2847, 7303), (4251, 4891)]