20791557

素因数分解:

$3^2\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{257}}^1$

素因数の和:453

約数の個数: 24

約数和(自身を含む): 30789720

約数和(自身を除く): 9998163

約数列:

[1, 3, 9, 89, 101, 257, 267, 303, 771, 801, 909, 2313, 8989, 22873, 25957, 26967, 68619, 77871, 80901, 205857, 233613, 2310173, 6930519, 20791557]

約数ペア:

[(1, 20791557), (3, 6930519), (9, 2310173), (89, 233613), (101, 205857), (257, 80901), (267, 77871), (303, 68619), (771, 26967), (801, 25957), (909, 22873), (2313, 8989)]