20788677

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8461}}^1$

素因数の和:8490

約数の個数: 32

約数和(自身を含む): 37909760

約数和(自身を除く): 17121083

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 189, 273, 351, 819, 2457, 8461, 25383, 59227, 76149, 109993, 177681, 228447, 329979, 533043, 769951, 989937, 1599129, 2309853, 2969811, 6929559, 20788677]

約数ペア:

[(1, 20788677), (3, 6929559), (7, 2969811), (9, 2309853), (13, 1599129), (21, 989937), (27, 769951), (39, 533043), (63, 329979), (91, 228447), (117, 177681), (189, 109993), (273, 76149), (351, 59227), (819, 25383), (2457, 8461)]