20379843

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:369

約数の個数: 40

約数和(自身を含む): 33715440

約数和(自身を除く): 13335597

約数列:

[1, 3, 9, 11, 27, 33, 81, 89, 99, 257, 267, 297, 771, 801, 891, 979, 2313, 2403, 2827, 2937, 6939, 7209, 8481, 8811, 20817, 22873, 25443, 26433, 68619, 76329, 79299, 205857, 228987, 251603, 617571, 754809, 1852713, 2264427, 6793281, 20379843]

約数ペア:

[(1, 20379843), (3, 6793281), (9, 2264427), (11, 1852713), (27, 754809), (33, 617571), (81, 251603), (89, 228987), (99, 205857), (257, 79299), (267, 76329), (297, 68619), (771, 26433), (801, 25443), (891, 22873), (979, 20817), (2313, 8811), (2403, 8481), (2827, 7209), (2937, 6939)]